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Spinal Anatomy > Lecture Exam 2 > Flashcards

Lecture Exam 2 Flashcards

1
Q

Which mammals do not have seven cervical vertebrae?

A

the two toed sloth, manatee, ant bear, and the three toed sloth

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2
Q

Which mammals have more than seven cervical vertebrae?

A

ant bear, three-toed sloth

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3
Q

Which mammals have less than seven cervical vertebrae?

A

two-toed sloth, manatee

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4
Q

What is the number of vertebrae in the typical cervical spine?

A

seven segments

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5
Q

Which vertebrae are typical cervicals?

A

C3-C6

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6
Q

Which vertebrae are atypical cervicals?

A

C1, C2, C7

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7
Q

What is the shape of the typical cervical vertebral body from the cranial view?

A

rectangular

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8
Q

What is the effect of aging on the cervical vertebral body?

A

it diminishes the overall height of the vertebral body

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9
Q

What is the appearance of the typical cervical vertebral body from the lateral view?

A

posterior height is greater than anterior height by a few millimeters

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10
Q

What would be the direction of the cervical curve based on osseous features?

A

posterior or kyphotic

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11
Q

What accounts for the direction of the typical cervical curve?

A

the intervertebral disc height

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12
Q

What is the direction of the typical cervical curve?

A

anterior or lordotic

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13
Q

Which vertebral couples will demonstrate a decrease in intervertebral disc height?

A

C2/C3 down to C4/C5

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14
Q

At which vertebral couple will the cervical curve again increase intervertebral height?

A

C5/C6

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15
Q

What are the names of the lateral modification of the superior epiphyseal rim?

A

uncinate process, unciform process, uncovertebral process, uncus or lateral lip

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16
Q

What are the modifications of the inferior epiphyseal rim of a typical cervical?

A

anterior lip, posterior lip, right and left lateral grooves

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17
Q

What is the joint classification for the anterior lip-anterior longitudinal ligament-anterior anterior groove articulation?

A

fibrous (amphiarthrosis) syndesmosis

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18
Q

What is the joint classification for the posterior lip-posterior longitudinal ligament-posterior groove articulation?

A

fibrous (amphiarthrosis) syndesmosis

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19
Q

What is the joint classification for the uncinate process-lateral groove articulation?

A

modified synovial saddle (diarthrosis sellar)

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20
Q

What is the joint classification for the spongy bone-intervertebral disc articulation?

A

cartilaginous (amphiarthrosis) symphysis

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21
Q

How many joints are present on the upper surface of a typical cervical vertebral body?

A

five

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22
Q

What joint surfaces are present on the lower surface of the vertebral body of a typical cervical?

A

anterior lip, right lateral groove, left lateral groove, posterior lip and inferior spongy bone surface

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23
Q

How many joints are present on the lower surface of a typical cervical vertebral body?

A

five

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24
Q

How many total joint surfaces are present on the vertebral body of a typical cervical?

A

ten

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25
Q

What is the name given to the uncinate process-lateral groove articulation?

A

joint of Luschka or uncovertebral joint

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26
Q

The joint of Luschka is formed from what surfaces?

A

the uncinate process and lateral groove

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27
Q

How many total synovial joint surfaces are present on the vertebral body of a typical cervical?

A

four

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28
Q

What is the functional significance of the joint of Luschka?

A

it appears to stabilize the intervertebral disc while accommodating flexion - extension - and requiring coupled motion (axial rotation with lateral bending) in the cervical spine

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29
Q

What muscle attaches to the typical cervical vertebral body?

A

the longus colli muscle

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30
Q

What is the orientation and angulation of the pedicle of a typical cervical?

A

posterolateral, 45 degrees

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31
Q

In the vertebral couple, which cervical vertebral body will contribute more toward the height of the intervertebral foramen?

A

neither, both contribute equally to the intervertebral foramen height

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32
Q

What is the direction of projection of the cervical lamina?

A

posteromedially

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33
Q

What ligament attaches to the lamina of a typical cervical?

A

ligamentum flavum

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34
Q

What joint classification will be associated with the ligamentum flavum and its attachment?

A

fibrous (amphiarthrosis) syndesmosis

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35
Q

Ossification of the ligamentum flavum at the attachment on the lamina will result in what feature?

A

Para-articular processes

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36
Q

Ossification of the ligamentum flavum at the attachment site on the lamina will be associated with which classification of bone?

A

accessory bone

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37
Q

Ossification within the length of the ligamentum flavum will be associated with which classification of bone?

A

heterotopic bone

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38
Q

What is the outline of the vertebral foramen of a typical cervical vertebra?

A

heart-shaped or triangular

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39
Q

Which is the greatest diameter of the vertebral foramen of typical cervicals?

A

Transverse

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40
Q

The greatest transverse diameter of the typical cervical vertebra occurs at ______?

A

C6

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41
Q

The greatest frequency of osteophytes associated with the vertebral body occurs at which typical cervical vertebral couple?

A

C5/C6

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42
Q

What osseous parts form the typical cervical vertebra transverse process?

A

costal element, anterior tubercle, costotransverse bar, posterior tubercle, true transverse process

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43
Q

What muscles will attach to the anterior tubercle of a typical cervical vertebra?

A

anterior scalene, longus capitis, longus colli, anterior intertransversarii

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44
Q

What muscles may attach to the posterior tubercle of a typical cervical vertebra?

A

splenius cervicis, iliocostalis cervicis, longissimus cervicis, levator scapula, middle scalene, posterior scalene, rotators and posterior intertranscersarii

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45
Q

What muscles will attach to the costotransverse bar?

A

middle scalene and posterior intertransversarii

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46
Q

What produces the primary tension on the transverse process that will cause remodeling in the anterolateral and inferior directions?

A

cervical spinal nerves as they are directed anterolaterally and inferiorly to form the cervical brachial plexuses

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47
Q

What is the name given to the superior margin of the costotransverse bar?

A

sulcus for the ventral primary ramus of a cervical spinal nerve

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48
Q

What is the orientation and angulation of a typical cervical transverse process?

A

60 degrees anterolaterally (from midsagittal plane), 15 degrees inferiorly (from the horizontal plane)

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49
Q

What is the name given to the modification of the anterior tubercle of the C6 transverse process?

A

the carotid tuberlce

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50
Q

What will occupy the typical cervical vertebra transverse foramen?

A

the vertebral artery, vertebral venous plexus and postganglionic sympathetic motor nerve fibers

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51
Q

What is the name given to the surface feature observed between the ends of the articular pillar?

A

the groove/sulcus for the dorsal ramus of a cervical spinal nerve

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52
Q

What is the classic angulation of typical cervical articular facets?

A

40 to 45 degrees from the coronal plane

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53
Q

Recent work suggests what angulation for typical cervical articular facets?

A

55 to 60 degress

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54
Q

What is the orientation of the typical cervical superior articular facet?

A

backward, upward, medial (BUM)

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55
Q

What is the orientation of the typical cervical inferior articular facet?

A

forward, lateral, downward (FoLD)

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56
Q

What muscles will attach to typical cervical articular processes?

A

the longissimus capitis, longissimus cervicis, semispinalis capitis, semispinalis capitis, multifidus, and rotators

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57
Q

What muscles will bend the capsular ligament of cervical zygapophyses?

A

the semispinalis capitis, multifidus, and rotator longus

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58
Q

What is the joint classification for the typical cervical zygapophysis?

A

synovial plane (diarthrosis arthrodia) joint

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59
Q

What modifications of the synovial joint are observed in the cervical spine?

A

meniscoidal folds

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60
Q

What function will meniscoidal folds provide in cervical zygapophyses?

A

they are assumed to distribute pressure across the joint surface

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61
Q

The greatest range of flexion - extension along the typical cervical vertebrae occurs at which vertebral couple?

A

typically C5/C6

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62
Q

What motions are coupled in the cervical spine?

A

lateral bending and axial rotation

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63
Q

Ranges of coupled motion among the typical cervical vertebrae will be similar for what cervical vertebral couples?

A

the C2/C3, C3/C4, C4,C5, vertebral couples

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64
Q

Ranges of motion among the typical cervical vertebrae will begin to decrease at what cervical vertebral couple?

A

the C5/C6 vertebral couple

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65
Q

What is the usual condition for the caucasian typical cervical spinous process?

A

they are bifid

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66
Q

What is the condition for the African - American typical cervical spinous process?

A

they are non - bifid

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67
Q

What muscles may attach to the typical cervical spinous process?

A

the spinalis cervicis, semispinalis cervicis, semispinalis thoracis, multifidus, rotators and interspinalis

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68
Q

What ligament will attach to the typical cervical spinous process?

A

the interspinous ligament and ligamentum nuchae

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69
Q

What will form the anterior boundary of a typical cervical intervertebral foramen?

A

the lateral groove and vertebral body of the segment above, the uncinate process and vertebral body of the segment below, the intervertebral disc and the posterior longitudinal ligament

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70
Q

What will form the posterior boundary of a typical cervical intervertebral foramen?

A

the inferior articular process (post-zygapophysis), the superior articular process (pre-zygapophysis), the capsular ligament and the ligamentum flavum

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71
Q

What will form the superior boundary of a typical cervical intervertebral foramen?

A

the inferior vertebral notch or inferior vertebral incisure

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72
Q

What will form the inferior boundary of a typical cervical intervertebral foramen?

A

the superior vertebral notch or superior vertebral incisure

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73
Q

What is the unique anterior boundary of the intervertebral foramen for the C4 spinal nerve?

A

the lateral groove of C3 and uncinate process of C4 forming the joint of Luschka

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74
Q

What is the name of the first cervical vertebra?

A

atlas

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75
Q

What features are lacking at C1?

A

vertebral body, pedicles, a spinous process and the intervertebral disc

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76
Q

What is thought to represent the pedicle at C1?

A

the anterior arch

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77
Q

What osseous modification is observed to the front of the anterior arch of C1?

A

the anterior tubercle

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78
Q

What muscle attaches to the anterior arch of C1?

A

longus colli

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79
Q

What ligament will attach to the anterior arch of C1?

A

the anterior longitudinal, anterior atlanto-occipital and anterior atlanto-axial ligaments

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80
Q

What is observed on the back of the anterior arch of C1?

A

the fovea dentis

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81
Q

What joint classifications are observed on the anterior arch of C1?

A

fibrous (amphiarthrosis) syndesmosis joint and synovial pivot (diarthrosis trochoid) joint

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82
Q

What is the morphology of the superior articular facet of C1?

A

they are elliptical, closer together in front and often demonstrate an elevation subdividing the facet surface into two separate surfaces

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83
Q

What is the orientation of the superior articular facet of C1?

A

backward, upward, and medial (BUM)

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84
Q

What is the joint classification of the atlanto-occipital zygapophysis?

A

synovial (diarthrosis) ellipsoidal joint

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85
Q

What are the morphological characteristics of the inferior articular facet of C1?

A

asymmetrical, slightly concave or flattened

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86
Q

What is the orientation of the inferior articular facet of C1?

A

backward, medial, downward (BMD)

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87
Q

What is the joint classification of the atlanto-axial zygapophysis?

A

synovial plane (diarthrosis arthrodia) joint

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88
Q

What is the name of the rounded elevation on the medial aspect of the lateral mass of C1?

A

tubercle for the transverse atlantal ligament

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89
Q

What muscles attach to the lateral mass of C1?

A

levator scapula, splenius cervicis and rectus capitis anterior

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90
Q

What part of C1 represents the spinous process?

A

posterior tubercle of the posterior arch

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91
Q

What is the distance from the posterior tubercle of the posterior arch to the skin in each gender?

A

males: about fifty millimeters; females: about thirty-seven millimeters

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92
Q

What attaches to the posterior tubercle of the posterior arch of C1?

A

rectus capitis posterior minor muscle and ligamentum nuchae

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93
Q

What superior surface modifications of the posterior arch of C1 are present?

A

groove/sulcus for the vertebral artery and arcuate rim

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94
Q

What attaches to the arcuate rim of C1?

A

the posterior atlanto-occipital ligament

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95
Q

Ossification of the free margin of the posterior atlanto-occipital ligament results in which atypical bone classification?

A

accessory bone

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96
Q

What is the earliest age of development where ossification of the anterior free margin of the posterior atlanto-occipital ligament was observed?

A

about age 7 years old

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97
Q

Based on the amount of ossification of the anterior free margin the posterior atlanto-occipital ligament what structures will form?

A

an incomplete ponticulus posticus or a complete ponticulus posticus

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98
Q

What names are given to the opening formed by the ponticulus posticus?

A

arcuate foramen or retroarticular canal

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99
Q

Ponticulus posticus has been observed in what ethnic populations?

A

all ethnic populations studied thus far

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100
Q

What is the general range of incidence of ponticulus posticus in the populations studied?

A

1-4%

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101
Q

What is the gender bias now associated with ponticulus posticus?

A

female

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102
Q

What is the incidence of a complete ponticulus posticus versus an incomplete ponticulus posticus?

A

the incidence of a complete ponticulus posticus is about fifteen percent; the incidence of an incomplete ponticulus posticus may be as high as forty-one percent

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103
Q

What are the osseous parts of the transverse process of C1?

A

costal element posterior tubercle, true transverse process

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104
Q

What muscles attach to the transverse process of C1?

A

rectus capitis anterior, rectus capitis lateralis, middle scalene, levator scapula, splenius cervicis, obliquus capitis superior, obliquus capitis inferior and intertransversarii muscles

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105
Q

What suboccipital muscles are known to have fascial projections attaching to the spinal dura?

A

rectus capitis posterior minor, rectus capitis posterior major, obliquus capitis inferior

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106
Q

What are the connections between suboccipital muscles and the spinal dura called?

A

myodural bridges

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107
Q

What are the lateral bridges of atlas connected to?

A

the lateral mass and the transverse process of atlas

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108
Q

What forms of the lateral bridges are observed in the population?

A

incomplete lateral bridges and complete lateral bridges

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109
Q

What opening is identified when a complete lateral bridge is formed?

A

the retrotransverse foramen

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110
Q

What are the possible contents of the retrotransverse foramen?

A

the vertebral artery, a branch from the suboccipital nerve and veins communicating with the venous sinuses of the neck

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111
Q

Which of the ponticles (bridges) of atlas is most numerous?

A

ponticulus posticus

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112
Q

Which of the ponticles (bridges) of atlas is only observed in humans?

A

lateral bridges

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113
Q

What is observed in the transverse foramen of C1?

A

vertebral artery, vertebral venous plexus, postganglionic sympathetic motor nerve fibers

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114
Q

What is the gender variation for measurements of the transverse diameter of C1?

A

Males: 78 millimeters and females: 72 millimeters

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115
Q

What is the distance from the posterior tubercle of the transverse process of C1 to the skin for each gender?

A

a little over 30 millimeters for both males and females

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116
Q

How many synovial joint surfaces are observed at C1?

A

five

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117
Q

What names are given to C2?

A

axis or epistropheus

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118
Q

What synovial joint surfaces are observed at C1?

A

two superior articular facets, two inferior articular facets and the fovea dentis

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119
Q

What unique vertebral body modification is characteristic of C2?

A

the dens or odontoid process

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120
Q

How many joint surfaces are present on the odontoid process of C2?

A

five

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121
Q

What joint surfaces are present on the odontoid process of C2?

A

facet for fovea dentis, groove for transverse atlantal ligament, attachment sites for the alar ligaments, attachment site for the apical-dental ligament

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122
Q

What is the name/classification given to the odontoid process when the tip of the dens is directed posterior?

A

lordotic dens

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123
Q

What is the name/classification given to the odontoid process when the tip of the dens is directed anterior?

A

kyphotic dens

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124
Q

What joint surfaces are present at the inferior part of the vertebral body of C2?

A

anterior lip, posterior lip, right and left lateral grooves and cancellous bone

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125
Q

How many joints are formed by the inferior part of the vertebral body of C2?

A

five

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126
Q

How many joint surfaces are present at the vertebral body of C2?

A

ten

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127
Q

What joint classifications are present at the vertebral body of C2?

A

fibrous (amphiarthrosis) syndesmosis, synovial pivot (diarthrosis trochoid), modified synovial saddle (diarthrosis sellar) and cartilaginous (amphiarthrosis) symphysis

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128
Q

What ligament will represent the cranial continuation of the posterior longitudinal ligament?

A

membrana tectoria

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129
Q

What ligament forms the anterior boundary for the spinal canal above C2?

A

membrana tectoria

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130
Q

What ligament forms the anterior boundary for the spinal canal below C2?

A

posterior longitudinal ligament

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131
Q

What is the location of the superior vertebral notch of C2?

A

on the lamina-pedicle junction

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132
Q

What attaches to the lamina of C2?

A

obliquus capitis inferior muscle, posterior atlanto-axial ligament, ligamentum flavum

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133
Q

What is the appearance of the superior articular facets of C2?

A

they are asymmetrical and slightly convex

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134
Q

What is the facet orientation of the superior articular facet of C2?

A

backward, upward, and lateral (BUL)

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135
Q

What is the orientation of the inferior articular facets of C2?

A

forward, lateral, and down (FoLD)

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136
Q

What muscle attaches to the articular processes of C2?

A

longissimus cervicis

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137
Q

What will be observed in the transverse foramen at C2?

A

vertebral artery, vertebral venous plexus, postganglionic sympathetic motor nerve fibers

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138
Q

What is the gender variation for the transverse diameter of C2?

A

Males: fifty-seven millimeters and Females: about fifty millimeters

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139
Q

What muscles attach to the transverse process at C2?

A

levator scapulae, middle scalene, splenius cervicis, longissimus cervicis and intertransversarii

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140
Q

What is the characteristic appearance of the C2 spinous process in humans?

A

bifid

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141
Q

What muscles attach to the spinous process of C2?

A

rectus capitis posterior major, obliquus capitis inferior, spinalis cervicis, semispinalis cervicis, multifidus, rotators and interspinalis muscles

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142
Q

What ligaments attach to the spinous process of C2?

A

ligamentum nuchae, interspinous ligaments

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143
Q

What names may be given to C7?

A

vertebra prominens and vertebral prominence

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144
Q

What is the name given to the topographical elevation observed at the base of the neck?

A

vertebral prominence

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145
Q

What name is given only to C7?

A

vertebra prominens

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146
Q

What is the segment and gender bias for vertebrae other than C7 becoming the vertebral prominence?

A

C6 is more common in females and T1 is more common in males

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147
Q

How many joint surfaces are present at the vertebral body of C7?

A

eight

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148
Q

What joint classifications are observed at the vertebral body of C7?

A

eight

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149
Q

What joint classifications are observed at the vertebral body of C7?

A

fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis and modified synovial saddle (diarthrosis sellar) joint

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150
Q

What muscle(s) attaches to the vertebral body of C7?

A

longus colli muscle

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151
Q

What features are typically present in the transverse foramen of C7?

A

vertebral venous plexus, postganglionic sympathetic fibers

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152
Q

What muscles attach to the transverse process of C7?

A

middle scalene, iliocostalis thoracis, longissimus cervicis, semispinalis capitis, rotators, intertransversarii and levator costarum brevis

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153
Q

What is the orientation of the superior articular facet of C7?

A

backward, upward, medial (BUM)

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154
Q

What is the orientation of the inferior articular facet of C7?

A

forward, medial, downward (ForMeD)

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155
Q

What muscles will attach to the articular process of C7?

A

longissimus cervicis, longissimus capitis, semispinalis cervicis and multifidus

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156
Q

What muscles attach to the spinous process of C7?

A

trapezius, rhomboid minor, serratus posterior superior, splenius capitis, spinalis capitis, spinalis cervicis, semispinalis thoracis, multifidus, rotators and interspinalis

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157
Q

What ligaments attach to the spinous process of C7?

A

ligamentum nuchae and interspinous ligaments

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158
Q

The vertebral artery on which side is typically larger?

A

left vertebral artery

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159
Q

What is the gender bias regarding size of the vertebral artery?

A

men have larger vertebral arteries than women

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160
Q

Which side artery was tested during the course of the vertebrobasilar artery insufficiency exam?

A

the ipsilateral artery on the side of rotation

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161
Q

Typically, at what vertebral level will the vertebral artery first become located in the transverse foramen?

A

C6

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162
Q

At what location will the vertebral artery form its first compensatory loop?

A

the atlanto-axial interspace

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163
Q

At what location will the vertebral artery form its second compensatory loop?

A

the atlanto-occipital interspace

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164
Q

At what segments will the vertebral artery be firmly attached to the transverse foramen?

A

both C1 and C2

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165
Q

What is the purpose of the vertebral artery loops between C2, C1, and occiput?

A

the increased length will accommodate the greater rotation at these locations

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166
Q

What happens to the vertebral artery after it enters the subarachnoid space at C1?

A

the vertebral artery ascends along the medulla oblongata to the pontine-medullary junction where the right and left arteries unite to form the basilar artery

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167
Q

What forms the boundaries for the exit of the C1 nerve from the spinal canal?

A

occipital condyle, superior articular process of C1, capsular ligament, arcuate rim, groove for the vertebral artery, posterior atlanto-occipital ligament

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168
Q

What forms the anterior boundary for the C2 nerve exit from the spinal canal?

A

the inferior articular process of C1, superior articular process of C2, capsular ligament

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169
Q

What forms the posterior boundary for the C2 nerve exit from the spinal canal?

A

the posterior arch of C1, lamina of C2 and posterior atlanto-axial ligament

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170
Q

What forms the anterior boundary for the C3-C7 nerve exit from the spinal canal?

A

the vertebral bodies, intervertebral disc, posterior longitudinal ligament, uncinate process, lateral groove

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171
Q

What forms the boundary for the C8 nerve exit from the spinal canal?

A

the vertebral bodies of C7 and T1, intervertebral disc, posterior longitudinal ligament, capsular ligament of the costocentral joint, superior costal facet of T1 and articular surface of the first rib

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172
Q

How many synovial joints are identified for each cervical vertebra?

A

C1 = five, C2 = eight, C3-C6 = eight, C7 = six

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173
Q

How many joints are identified at the vertebral body of each cervical vertebra?

A

C1 = none, C2 = ten, C3-6 = ten, C7 = eight

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174
Q

What features allow discrimination between T2-T4 and T5-T8 segmental groups?

A

the vertebral body, transverse process, articular process and spinous process

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175
Q

What is the outline of the vertebral body of a typical thoracic from a superior view?

A

trianglular

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176
Q

What is the name given to the left side appearance of the vertebral body of T5-T8?

A

the aortic impression

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177
Q

What part of the vertebral body is most influenced by the aorta at T5-T8?

A

the left side superior and inferior epiphyseal rims

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178
Q

What is the height pattern of the typical thoracic vertebral body?

A

the posterior height is greater than the anterior height by one to two millimeters

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179
Q

What is the principle cause of the posterior curve of the thoracic spine?

A

the vertebral body height differences

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180
Q

In terms of the anterior-posterior curves of the vertebral column, what direction will the thoracic spine face?

A

posterior

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181
Q

What is another way of naming a posterior curve pattern?

A

kyphotic

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182
Q

What joint classifications are identified at the vertebral body of a typical thoracic?

A

fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis and synovial plane (diarthrosis athrodia)

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183
Q

How many synovial joints are formed at the vertebral body of a typical thoracic?

A

four

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184
Q

How many symphysis joints are formed with the vertebral body of a typical thoracic?

A

two

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185
Q

How many joints are formed at the vertebral body of a typical thoracic?

A

typically ten (fourteen if the costocentral stellate/radiate ligaments are included)

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186
Q

What is the name given to the joint formed between the vertebral body and rib?

A

costocentral joint

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187
Q

How many costocentral joints are formed at the vertebral body of a typical thoracic?

A

four

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188
Q

Which of the demi-facets on the vertebral body of a typical thoracic is larger?

A

the superior costal demi-facet

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189
Q

What feature will provide assistance in maintaining the stability of the intervertebral foramen in the typical thoracics?

A

the costocentral joint or ribs

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190
Q

What is the size relationship between the articulating surface of the head of the rib and the costal demi-facet surface?

A

the rib surface is greater than the costal demi-facet surface

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191
Q

Which muscle(s) is attached to the vertebral body of T2 or T3?

A

the longus colli

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192
Q

What is the angulation of the pedicle in the typical thoracic region?

A

ten to fifteen degrees posterolateral from the sagittal plane

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193
Q

Which x-ray view is used to see into the intervertebral foramen of a typical thoracic?

A

the lateral view

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194
Q

Which vertebral notch or incisure is said to be prominent?

A

the inferior vertebral notch or inferior vertebral incisure

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195
Q

What is the overlap of lamina called in the typical thoracic region?

A

shingling

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196
Q

In which plane will the size of the vertebral foramen of a typical thoracic be greatest?

A

the transverse plane, the vertebral transverse diameter

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197
Q

What is the distance between the transverse tubercles in the typical thoracic region?

A

from T2 each transverse diameter becomes shorter as the transverse processes angle more posterior

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198
Q

What is present on the transverse tubercle of a typical thoracic?

A

the transverse costal facet

199
Q

What suboccipital muscles attach to C1?

A

rectus Capitis posterior minor, Obliquus Capitis superior, Obliquus Capitis inferior

200
Q

Which suboccipital muscles attach to C2?

A

rectus Capitis posterior major, Obliquus Capitis inferior

201
Q

What joint classifications are present at C1?

A

synovial (diarthrosis) ellipsoidal, synovial pivot (diarthrosis trochoid), synovial plane (diarthrosis arthrodia) and fibrous (amphiarthrosis) syndesmosis

202
Q

What joint classifications are present at C2?

A

synovial pivot (diarthrosis trochoid), synovial plane (diarthrosis arthrodia), modified synovial saddle (diarthrosis sellar), fibrous (amphiarthrosis) syndesmosis and cartilaginous (amphiarthrosis) symphysis joint

203
Q

What joint classifications are present at each typical cervical?

A

synovial plane (diarthrosis arthrodia), modified synovial saddle (diarthrosis sellar), fibrous (amphiarthrosis) syndesmosis and cartilaginous (amphiarthrosis) symphysis

204
Q

What joint classifications are present at C7?

A

synovial plane (diarthrosis arthrodia), modified synovial saddle (diarthrosis sellar), fibrous (amphiarthrosis) syndesmosis and cartilaginous (amphiarthrosis) symphysis

205
Q

What forms the boundaries for the exit of the C2 spinal nerve from the spinal canal?

A

inferior articular process of C1, superior articular process of C2, capsular ligament, inferior vertebral notch of C1, superior vertebral notch of C2, posterior arch of C1, lamina of C2, posterior atlanto-axial ligament

206
Q

What are the superior articular facet orientations for the cervical vertebrae?

A

C1 is backward, upward, medial (BUM), C2 is backward, upward, lateral (BUL), C3-C7 is backward, upward, Medial (BUM)

207
Q

What are the inferior articular facet orientations for the cervical vertebrae?

A

C1 is backward, downward, Medial (BMD), C2-C6 is forward, downward, lateral (FoLD), C7 is forward, downward, medial (ForMeD)

208
Q

What is the aortic impression?

A

the flattening of the superior and inferior epiphyseal rims on the left side of the vertebral body of T5-T8 which gives the vertebral body a less scalloped or less indented appearance on that side

209
Q

What is the height pattern of intervertebral discs in the typical thoracic region?

A

The intervertebral discs are rather planar or flat with no apparent height difference between anterior and posterior heights

210
Q

What is the nerve - vertebral body relationship at the typical thoracic intervertebral foramen?

A

in the intervertebral foramen, the number of the nerve is the same as the number of the upper thoracic in the vertebral couple

211
Q

What is the rib - vertebral body relationship at the typical thoracic intervertebral foramen?

A

in the intervertebral foramen, the number of the rib is the same as the number of the lower thoracic in the vertebral couple

212
Q

What is the rib - transverse process relationship for the typical thoracics?

A

the number of the rib is the same as the number of the vertebra whose transverse process is being studied; fifth rib with T5 transverse process

213
Q

What is the classification of the costotransverse joint?

A

synovial plane (diarthrosis arthrodia) joint

214
Q

What are the osseous parts of the costotransverse joint?

A

the transverse costal facet and the articular surface of the tubercle of a rib

215
Q

What ligaments support the costotransverse joint of a typical thoracic?

A

the superior costotransverse, inferior costotransverse, and lateral costotransverse ligaments

216
Q

The superior costotransverse ligament of rib five will attach to which vertebral feature?

A

the transverse process of T4

217
Q

What ligaments attach to the transverse process of a typical thoracic?

A

intertransverse, capsular costotransverse, superior costotransverse, inferior costotransverse and lateral costotransverse ligaments

218
Q

Which muscles may attach to the transverse process of a typical thoracic?

A

longissimus Thoracis, longissimus Cervicis, longissimus Capitis, semispinalis thoracis, semispinalis cervicis, semispinalis Capitis, Multifidus, rotator longus, rotator brevis, intertransversarii, levator costarum longus and levator costarum brevis

219
Q

Of the muscles attaching to the to the transverse process of typical thoracics, which ones will attach only to the T5-T8 vertebral segments?

A

semispinalis thoracis and levator costarum longus

220
Q

How do the transverse diameters of the articular processes compare in the T2-T4 region?

A

the superior articular process transverse diameter is greater than the inferior articular process transverse diameter for a given segment

221
Q

How do the transverse diameters of the articular processes compare in the T5-T8 region?

A

the superior articular process transverse diameter is the same as or equal to the inferior articular process transverse diameter for a given segment

222
Q

What is the orientation of the superior articular facet of a typical thoracic?

A

they face backward, upward, and lateral (BUL)

223
Q

What is the orientation of the inferior articular facet of a typical thoracic?

A

they face forward, downward, and medial (ForMeD)

224
Q

What is the curvature of the superior articular facet of a typical thoracic?

A

they are slightly convex

225
Q

What is the curvature of the inferior articular facet of a typical thoracic?

A

they are slightly concave

226
Q

What is the joint classification of the articular facet joint?

A

synovial plane (diarthrosis arthrodia) joint

227
Q

How many synovial joints are present at a typical thoracic?

A

ten

228
Q

Identify the synovial joint surfaces present on a typical thoracic.

A

two superior costal demi-facets, two inferior costal demi-facets, two transverse costal facets, two superior articular facets, two inferior articular facets

229
Q

What is the name given to the overlap of spinous processes in the thoracic region?

A

imbrication

230
Q

Imbrication will be more pronounced for what region of the thoracics?

A

T5-T8

231
Q

Which thoracic has the longest spinous process?

A

T8

232
Q

What is the angulation of the spinous process of T2-T4?

A

the undersurface of T2-T4 spinous processes will angle up to forty degrees from the horizontal plane

233
Q

What is the angulation of the spinous process of T5-T8?

A

the undersurface of T5-T8 spinous processes will angle up to sixty degrees from the horizontal plane

234
Q

What joint classification is associated with typical thoracic spinous process ligaments?

A

fibrous (amphiarthrosis) syndesmosis joint

235
Q

What muscles may attach to the spinous process of a typical thoracic?

A

trapezius, latissimus dorsi, rhomboid major, serratus posterior superior, splenius cervicis, splenius Capitis, spinalis thoracis, spinalis cervicis, spinalis Capitis, semispinalis thoracis, Multifidus, rotator longus, rotator brevis, and interspinalis

236
Q

Which muscles attaching to the spinous process of a typical thoracic are not included in any muscle layer of the true back?

A

splenius cervicis, splenius Capitis and interspinalis

237
Q

What joint classifications are present at every typical thoracic vertebra?

A

fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis and synovial plane (diarthrosis arthrodia)

238
Q

What is the appearance of the superior surface of the vertebral body of T1?

A

it is somewhat cup-shaped with elevations at the posterior and lateral margin

239
Q

What may the elevations on the vertebral body of T1 represent?

A

uncinate process

240
Q

What is the appearance of the inferior surface of the vertebral body of T1?

A

typically flat, lacking anterior and posterior lips characteristic of the cervicals

241
Q

How many synovial joints are formed at the vertebral body of T1?

A

four normally

242
Q

How many symphysis joints are formed with the vertebral body of T1?

A

two

243
Q

How many syndesmosis joints are formed at the vertebral body of T1?

A

typically four are identified (as many as eight if the rib articulation is included)

244
Q

How many joints are formed at the vertebral body of T1?

A

typically ten (fourteen if the rib ligaments are included)

245
Q

How many costocentral joints are formed at the vertebral body of T1?

A

four

246
Q

What synovial joint surfaces are present on the T1 vertebral body?

A

the right and left superior costal facet

the right and left inferior costal demi-facet

247
Q

What is the rib - vertebral body combination at the intervertebral foramen for the eighth cervical nerve?

A

the superior costal facet of T1 will joint with the articular surface of the head of the first rib

248
Q

What ligament supports the costocentral joint of the first rib?

A

the costocentral stellate/radiate ligament

249
Q

What ligaments support the costocentral joint of the second rib?

A

the costocentral stellate/radiate ligament and the costocentral interarticular or intra-articular ligament

250
Q

Which muscle(s) is attached to the vertebral body of T1?

A

the longus colli

251
Q

What ligaments support the costotransverse joint of T1?

A

the inferior costotransverse and lateral costotransverse ligaments

252
Q

What ligament is absent at the costotransverse joint of T1?

A

the superior costotransverse ligament

253
Q

Which costotransverse joint will the superior costotransverse ligament of T1 support?

A

the second rib costotransverse joint

254
Q

What muscles attach to the transverse process of T1?

A

longissimus thoracis, longissimus cervicis, longissimus capitis
semispinalis cervicis, semispinalis capitis
multifidus, rotator longus, rotator brevis, intertransversarii,
levator costarum brevis

255
Q

Which specific transversospinalis muscle is absent from T1?

A

semispinalis thoracis

256
Q

What is the orientation of the superior articular facet of T1?

A

they face backward, upward, and lateral (BUL)

257
Q

What is the orientation of the inferior articular facet of T1?

A

they face forward, downward and medial (ForMeD)

258
Q

What is the classification of the articular facet joint?

A

synovial plane (diarthrosis arthrodia)

259
Q

How many synovial joints are present at T1?

A

ten

260
Q

How many synovial joint surfaces for ribs are present at T1?

A

six

261
Q

Which vertebrae have been identified as forming the vertebral prominence?

A

C6, C7, T1

262
Q

What is the gender bias associated with T1 as the vertebral prominence?

A

males (9%) are more likely than females (6%) to demonstrate T1 as the vertebral prominence

263
Q

What muscles attach to the spinous process of T1?

A

the trapezius, rhomboid minor, serratus posterior superior, splenius capitis, spinalis thoracis, spinalis cervicis, spinalis capitis
semispinalis thoracis, multifidus, rotator longus, rotator brevis, interspinalis

264
Q

Which synovial joint surfaces may be absent from the vertebral body of T9?

A

inferior costal demi-facets

265
Q

Which muscles attach to the transverse process of T9?

A

the longissimus thoracis, semispinalis thoracis, multifidus, rotator longus, rotator brevis, intertransversarii, levator costarum longus and levator costarum brevis

266
Q

Which is the last thoracic vertebra to have an inferior costal demi-facet?

A

T9

267
Q

What muscles attach to the spinous process of T9?

A

the trapezius, latissimus dorsi, multifidus, rotator longus, rotator brevis and interspinalis

268
Q

Which muscles are conspicuously absent at the T9 spinous process?

A

spinalis and semispinalis

269
Q

How many synovial joints are formed at the vertebral body of T10?

A

two

270
Q

How many symphysis joints are formed with the vertebral body of T10?

A

two

271
Q

How many syndesmosis joints are formed at the vertebral body of T10?

A

typically four are identified (as many as eight if the costocentral stellate/radiate ligaments are included)

272
Q

How many joints are typically formed at the vertebral body of T10?

A

typically eight (twelve if the costocentral stellate/radiate ligaments are included)

273
Q

Which synovial joint surface is absent from the vertebral body of T10?

A

inferior costal demi-facets

274
Q

Para-articular processes are more commonly observed on which segment of the spine?

A

T10

275
Q

What muscles attach to the transverse process of T10?

A

longissimus thoracis
semispinalis thoracis, multifidus, rotator longus and rotator brevis
Intertransversarii, levator costarum longus and levator costarum brevis

276
Q

Which rib related facet is absent on T10?

A

the inferior costal demi-facet

277
Q

What is the orientation of the spinous process of T10?

A

posterior and slightly inferior, it will shorten and become more horizontal

278
Q

A dimpling or depression of the skin in the thoracic region is often characteristic of the location of which segment?

A

T10

279
Q

What muscles attach to the spinous process of T10?

A

the trapezius, latissimus dorsi, multifidus, rotator longus, rotator brevis and interspinalis

280
Q

What name is given to T11?

A

the anticlinal vertebra

281
Q

How many synovial joints are formed at the vertebral body of T11?

A

two

282
Q

How many symphysis joints are formed with the vertebral body of T11?

A

two

283
Q

How many joints are typically formed at the vertebral body of T11?

A

typically eight (twelve if the costocentral stellate/radiate ligaments are included)

284
Q

What is present at the tip of the transverse process of T11?

A

the transverse tubercle

285
Q

Which vertebra is the last segment to demonstrate a transverse costal facet?

A

T10

286
Q

What ligaments form the costotransverse joint of T11?

A

the superior costotransverse, and slightly developed inferior costotransverse and lateral costotransverse ligaments

287
Q

Which costotransverse joint will the superior costotransverse ligament at the transverse process of T11 support?

A

the twelfth rib costotransverse joint

288
Q

What muscles attach to the transverse process of T11?

A

longissimus thoracis
semispinalis thoracis, multifidus, rotator longus and rotator brevis
Intertransversarii and levator costarum brevis

289
Q

Which levator costarum muscle is absent at T11?

A

levator costarum longus

290
Q

Which segment is the last to demonstrate an attachment for the levator costarum longus?

A

T10

291
Q

What is the orientation of the superior articular facets of T11?

A

they face backward, upward, and lateral (BUL)

292
Q

What is the orientation of the inferior articular facets of T11?

A

they face forward, downward, and medial (ForMeD)

293
Q

How many synovial joints are typically present at T11?

A

six

294
Q

What muscles attach to the spinous process of T11?

A

trapezius, latissimus dorsi, serratus posterior inferior, iliocostalis lumborum, spinalis thoracis, multifidus, rotator longus, rotator brevis, and interspinalis

295
Q

At which segments of the thoracic spine will the spinalis muscle not attach?

A

T9, T10

296
Q

Which erector spinae muscle uniquely attaches to the spinous process of T11?

A

iliocostalis lumborum

297
Q

How many synovial joints are formed at the vertebral body of T12?

A

two

298
Q

How many symphysis joints are formed with the vertebral body of T12?

A

two

299
Q

How many syndesmosis joints are formed at the vertebral body of T12?

A

four are typically identified (as many as six if the costocentral stellate/radiate ligaments are included)

300
Q

How many joints are typically formed at the vertebral body of T12?

A

typically eight (ten if the costocentral stellate/radiate ligaments are included)

301
Q

Which muscle(s) is attached to the vertebral body of T12?

A

psoas major and psoas minor

302
Q

What is present at the transverse process region of T12?

A

three tubercles of variable size

303
Q

Which tubercle on T12 represents the transverse process?

A

the lateral tubercle

304
Q

Which tubercle on T12 represents the mammillary process of the lumbars?

A

the superior tubercle

305
Q

Which tubercle on T12 represents the accessory process of the lumbars?

A

the inferior tubercle

306
Q

What ligaments form the costotransverse joint of the twelfth rib?

A

the superior costotransverse ligament from T11 and the lumbocostal ligament from L1

307
Q

Which costotransverse ligament(s) are attached at T12?

A

none, the capsular, superior, inferior, and lateral costotransverse ligaments lack an attachment to T12

308
Q

What muscles attach to the transverse process region of T12?

A

the longissimus thoracis, semispinalis thoracis, multifidus, rotator longus, rotator brevis and intertransversarii

309
Q

Which segment is the last to demonstrate a levator costarum brevis attachment?

A

T11

310
Q

Which segment is the last to demonstrate a levator costarum longus attachment?

A

T10

311
Q

What is the orientation of the superior articular facets of T12?

A

they face backward, upward, and lateral (BUL)

312
Q

What is the orientation of the inferior articular facets of T12?

A

they face forward, downward, and lateral (FoLD)

313
Q

What is the curvature of the inferior articular facets of T12?

A

they are significantly convex

314
Q

How many synovial joints are typically present at T12?

A

six

315
Q

Identify the synovial joint surfaces typically present on T12

A

two superior costal facets, two superior articular facets, two inferior articular facets

316
Q

What muscles attach to the spinous process of T12?

A

the trapezius, latissimus dorsi, serratus posterior inferior, iliocostalis lumborum, spinalis thoracis, multifidus, rotator longus, rotator brevis and interspinalis

317
Q

Which erector spinae muscle is unique in its attachment to the T12 spinous process?

A

iliocostalis lumborum

318
Q

Which muscles attaching to the spinous process of T12 are not included in any muscle layer of the true back?

A

interspinalis

319
Q

What joint classifications are present at T12?

A

fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis and synovial (diarthrosis) arthrodia joint

320
Q

Which muscle(s) attach to the vertebral body of thoracic vertebrae?

A

longus colli, psoas major, and psoas minor

321
Q

Which erector spinae muscle will attach along the length of the thoracic spine?

A

longissimus

322
Q

Which thoracic is the last to demonstrate an attachment at the transverse process for the semispinalis muscle group?

A

T12

323
Q

Which thoracic is first to demonstrate the attachment of the levator costarum brevis?

A

T1

324
Q

Which thoracic is last to demonstrate the attachment of the levator costarum brevis?

A

T11

325
Q

Which thoracic is first to demonstrate the attachment of the levator costarum longus?

A

T7

326
Q

Which thoracic is last to demonstrate the attachment of the levator costarum longus?

A

T10

327
Q

Rhomboid minor will attach to the spinous process of which thoracic(s)?

A

T1 only

328
Q

Rhomboid major will attach to the spinous process of which thoracic(s)?

A

T2-T5

329
Q

Which thoracic vertebrae will demonstrate a spinous process attachment for the serratus posterior superior?

A

T1-T3

330
Q

Which thoracic vertebrae will demonstrate a spinous process attachment for the serratus posterior inferior?

A

T11-T12

331
Q

Which thoracics demonstrate a spinous process attachment for the splenius muscles?

A

T1-T6

332
Q

Which thoracics demonstrate a spinous process attachment for the iliocostalis lumborum?

A

T11-T12

333
Q

Which thoracics lack any spinalis muscle group attachment on their spinous process?

A

T9-T10

334
Q

Which thoracic is the last to demonstrate a spinous process attachment for the semispinalis?

A

T6

335
Q

What is the generic shape of the typical lumbar vertebral body from the cranial view?

A

reniform or kidney-shaped

336
Q

What accounts for the direction of the lumbar curve?

A

the vertebral body and intervertebral disc have a greater anterior height than posterior height

337
Q

What is the direction of the normal lumbar curve?

A

anterior (lordotic)

338
Q

What is the effect of aging on the vertebral body of a lumbar vertebra?

A

decrease in height, increase in circumference

339
Q

How many synovial joint surfaces are present at the typical lumbar vertebral body?

A

none

340
Q

How many joint surfaces are present on the vertebral body of a typical lumbar?

A

six

341
Q

How many synovial joint surfaces are present on the vertebral body of a typical lumbar?

A

none

342
Q

How many cartilaginous (amphiarthrosis) symphysis joint surfaces are on a typical lumbar vertebral body?

A

two

343
Q

How many fibrous (amphiarthrosis) syndesmosis joint surfaces are on a typical lumbar vertebral body?

A

four

344
Q

What joint classifications will be observed at the vertebral body of a typical lumbar?

A

cartilaginous (amphiarthrosis) symphysis joint and fibrous (amphiarthrosis) syndesmosis joint

345
Q

What muscles may attach to a typical lumbar vertebral body?

A

psoas major and psoas minor

346
Q

Psoas minor will only attach to the vertebral body of which segments?

A

T12, L1

347
Q

What is the name given to ligaments that attach the vertebral body to articular process?

A

transforaminal ligaments

348
Q

What are the types of transforaminal ligaments?

A

superior transforaminal, middle transforaminal and inferior transforaminal ligaments

349
Q

What ligaments attach the vertebral body to the transverse process?

A

corporotransverse ligaments

350
Q

What corporotransverse ligaments are identified?

A

superior corporotransverse and inferior corporotransverse ligaments

351
Q

What are the types of Hofmann ligaments?

A

anterior Hofmann ligaments, posterior Hofmann ligaments, lateral Hofmann ligaments and proximal root sleeve ligaments

352
Q

Hofmann ligaments are identified in which regions along the vertebral column?

A

cervical - upper thoracic region and lumbar region

353
Q

Cervical - upper thoracic Hofmann ligaments will attach what structures together?

A

dura mater to segments above

354
Q

What is the highest level known to demonstrate Hofmann ligaments?

A

C6

355
Q

What is the proposed function of the cervical - upper thoracic Hofmann ligaments?

A

resist caudal movement of the dural sac; resist gravitational forces on the dura and cord

356
Q

Lumbar Hofmann ligaments will attach what structures together?

A

dura mater to lower segmental levels

357
Q

What is the proposed function of the lumbar Hofmann ligaments?

A

resist cranial movement of the dural sac during flexion

358
Q

What is the proposed function of the proximal root sleeve ligament?

A

resist displacement of the peripheral nerve system in the intervertebral foramen

359
Q

What osseous conditions of lumbar vertebrae facilitate a spinal tap in this region?

A

overlap of the laminae, shingling, diminishes; Overlap of spinous processes, imbrication, diminishes

360
Q

What part of the central nervous system is present in the lumbar spine?

A

the conus medullaris is typically present in the vertebral foramen of L1

361
Q

What part of the peripheral nervous system is present in the lumbar spine?

A

the cauda equina is typically present in the vertebral foramina of L2-L4

362
Q

Beginning with the L1 transverse process, what is the generic direction and relative length of each succeeding lumbar transverse process?

A

Each transverse process is directed straight lateral and increases in length from L1-L3; L4 then begins to decrease in length

363
Q

What is the name of the elevation near the origin of the lumbar transverse process?

A

accessory process

364
Q

Congenital elongation of the lumbar accessory process results in what feature?

A

styloid process

365
Q

A styloid process occurs with what frequency and as a result of what condition?

A

7% occurrence as a result of congenital elongation of the lumbar accessory process

366
Q

What bony part of a cervical transverse process is lacking at the lumbar transverse process?

A

the costotransverse bar

367
Q

What ligament(s) will attach to the lumbar accessory process?

A

mammillo-accessory ligament

368
Q

What parts of a vertebra are attached via the mammillo-accessory ligament?

A

the mammillary process and accessory process of the same segment

369
Q

What was believed to be entrapped by the mammillo-accessory ligament?

A

the medial branch of the dorsal ramus of a lumbar spinal nerve

370
Q

What muscle(s) attach to the lumbar accessory process?

A

longissimus thoracis and intertransversarii

371
Q

What ligament attaches the twelfth rib to the transverse process of L1?

A

the lumbocostal ligament

372
Q

What muscles may attach to the transverse process of a typical lumbar vertebra?

A

psoas major, Quadratus Lumborum, longissimus thoracis, rotator brevis, rotator longus and intertransversarii

373
Q

Which transversopsinalis muscle group attaches to the typical lumbar transverse process?

A

rotators

374
Q

What ligaments attach to the transverse process of a typical lumbar vertebra?

A

the lumbocostal, mammillo-accessory and intertransverse ligaments

375
Q

What are the posterior elements of the vertebra?

A

zygapophysis, lamina and spinous process

376
Q

What are the anterior elements of the vertebra?

A

vertebral body and pedicle

377
Q

What is the orientation of the typical lumbar superior articular facet?

A

backward, upward, medial (BUM); typically concave

378
Q

What is the orientation of the typical lumbar inferior articular facet?

A

forward, lateral, downward (FoLD); significant convexity

379
Q

What is the name given to the projection on the lumbar superior articular process?

A

mammillary process

380
Q

What muscle(s) will attach to the mammillary process?

A

multifidus and intertransversarii

381
Q

What ligament will attach to the lumbar superior articular process and transverse process?

A

mammillo-accessory ligament

382
Q

What ligament will attach to the lumbar mammillary process and accessory process?

A

mammillo-accessory ligament

383
Q

What was believed to be entrapped by the mammillo-accessory ligament?

A

the medial branch of the dorsal ramus of a lumbar spinal nerve

384
Q

What additional ligaments are said to attach to lumbar articular process?

A

transforaminal ligaments

385
Q

How many synovial joints are present on a typical lumbar vertebra?

A

four

386
Q

What is the position of the lumbar zygapophysis in children?

A

the zygapophysis lies in the coronal plane

387
Q

What is the position of the lumbar zygapophysis in adults?

A

the zygapophysis lies in the sagittal plane for L1/L2, L2/L3, L3/L4; the zygapophysis lies in the coronal plane for L4/L5 and L5/S1

388
Q

What names are given to the condition in which one zygapophysis of a vertebral couple lies in the coronal plane and the other zygapophysis lies in the sagittal plane?

A

joint asymmetry or joint tropism

389
Q

What is the name(s) of the condition in which the typical lumbar spinous process increases in length due to the aging process?

A

Baastrup’s syndrome or “Kissing Spines”

390
Q

What is Baastrup’s syndrome?

A

elongation of the lumbar spinous process as a result of aging

391
Q

What muscles will attach to the typical lumbar spinous process?

A

latissimus dorsi, serratus posterior inferior, iliocostalis lumborum, longissimus thoracis, spinalis thoracis, multifidus, rotator longus, rotator brevis and interspinalis

392
Q

What is the appearance of the fifth lumbar vertebral body from the lateral view?

A

anterior height is greater than posterior height by several millimeters; it appears to form a wedge on a lateral X-ray view

393
Q

How many synovial joint surfaces are present at the fifth lumbar vertebral body?

A

none

394
Q

How many fibrous (amphiarthrosis) syndesmosis joint surfaces are present on the L5 vertebral body?

A

four

395
Q

How many joint surfaces are present on the vertebral body of the fifth lumbar?

A

six

396
Q

How many cartilaginous (amphiarthrosis) symphysis joint surfaces are present on the vertebral body of L5?

A

two

397
Q

How many fibrous (amphiarthrosis) syndesmosis joint surfaces are present on the vertebral body of L5?

A

four

398
Q

What joint classifications will be observed at the vertebral body of the fifth lumbar?

A

cartilaginous (amphiarthrosis) symphysis and fibrous (amphiarthrosis) syndesmosis

399
Q

What muscle(s) attach to the fifth lumbar vertebral body?

A

psoas major

400
Q

What is the orientation of the pedicle of the fifth lumbar?

A

posterior

401
Q

What characteristic of the L1-L4 pedicle may be used to differentiate if from the L5 segment? be specific and complete as the difference(s) on a segment from each group

A

on cranial view, the lateral surface of the pedicle is apparent on a L1-L4 segment. At L5 the transverse process originates from the vertebral body, pedicle and lamina-pedicle region.

402
Q

What muscle(s) attach to the fifth lumbar accessory process?

A

longissimus thoracis

403
Q

What muscles may attach to the transverse process of the fifth thoracic vertebra?

A

psoas major, quadratus lumborum, longissimus thoracis, rotator brevis, rotator longus and intertransversarii

404
Q

What ligaments traditionally attach to the transverse process of the fifth lumbar vertebra?

A

lumbosacral, iliolumbar, and mammillo-accessory ligaments

405
Q

What is the reported angulation and X-ray appearance of the fifth lumbar articular facets?

A

they lie in the vertical plane and are coronal facets

406
Q

What is the orientation of the fifth lumbar superior articular facet?

A

backward, upward, medial (BUM); typically concave

407
Q

What is the orientation of the fifth lumbar inferior articular facet?

A

forward, lateral, downward (FoLD); significant convexity

408
Q

What muscle(s) will attach to the mammillary process?

A

multifidus and intertransversarii

409
Q

What is the position of the lumbar zygapophysis in adults?

A

the zygapophysis lies in the sagittal plane for L1/L2, L2/L3, and L3/L4; the zygapophysis lies in the coronal plane for L4/L5, and L5/S1

410
Q

What names are given to the condition in which one zygapophysis of a vertebral couple lies in the coronal plane and the other zygapophysis lies in the sagittal plane?

A

joint asymmetry or joint tropism

411
Q

Define or describe joint tropism.

A

the condition in which one zygapophysis of a vertebral couple lies in the coronal plane and the other zygapophysis lies in the sagittal plane

412
Q

What is the name(s) of the condition in which the L5 spinous process increases in length due to the aging process?

A

Baastrup’s syndrome or “kissing spines”

413
Q

What is Baastrup’s syndrome?

A

elongation of the lumbar spinous process as a result of aging

414
Q

What is the name given to the congenital condition in which the L5 spinous process is elongated, the sacrum exhibits spina bifida, and dorsiflexion produces pain?

A

Knife Clasp syndrome

415
Q

What is knife clasp syndrome?

A

the congenital condition in which the L5 spinous process is elongated, the sacrum exhibits spina bifida and dorsiflexion produces pain

416
Q

What muscles will attach to the fifth lumbar spinous process?

A

latissimus dorsi, iliocostalis lumborum, longissimus thoracis, multifidus, rotator longus, rotator brevis and interspinalis

417
Q

How many synovial joints are maximally observed at each lumbar vertebrae?

A

L1-L5 = four each

418
Q

How many joints are traditionally observed at each lumbar vertebral body?

A

L1-L5 = six each

419
Q

What is the superior articular facet orientation at each lumbar vertebra?

A

L1-L5 = backward, upward, and medial (BUM)

420
Q

What is the inferior articular facet orientation at each lumbar vertebra?

A

L1-L5 = forward, downward, lateral (FoLD)

421
Q

What muscle(S) may attach to the first sacral vertebral body?

A

psoas major

422
Q

How many joint surfaces are present on the vertebral body of the first sacral segment?

A

five

423
Q

What is the origin of the sacral ala?

A

on base view, the S1 transverse process and costal element appear to originate from the vertebral body and possibly the pedicle to form the sacral ala

424
Q

What part of the sacral ala is derived from the costal element?

A

the anterior two-thirds

425
Q

What is the position of the sacral zygapophysis in adults?

A

the zygapophysis lies in the coronal plane for L5/S1

426
Q

What is the orientation of the first sacral superior articular facet?

A

backward, upward, medial (BUM); typically concave

427
Q

What muscles will attach to the sacral mammillary processes?

A

multifidus

428
Q

Fusion of the vertebral bodies of sacrum across the intervertebral disc is called_____.

A

synostosis

429
Q

From the anterior view, the intervertebral discs of sacrum will be replaced by what feature?

A

transverse ridges

430
Q

What forms the median sacral crest?

A

fused spinous processes and their spinous tubercles

431
Q

What muscles may attach to the median sacral crest?

A

latissimus dorsi, iliocostalis lumborum, longissimus thoracis

432
Q

What forms the intermediate sacral crest?

A

fused articualr processes and their facets

433
Q

What features may be identified along the intermediate sacral crest?

A

the mammillary process of S1 and the sacral cornu of S5?

434
Q

What does the sacral cornu represent?

A

the inferior articual process and facet of S5

435
Q

What forms the lateral sacral crest?

A

the fused transverse processes and transverse tubercles from S1 to S5

436
Q

What features may be identified along the lateral sacral crest?

A

S1 transverse tubercle, sacral tuberosity of S2, transverse tubercles of S3-S5

437
Q

What is the name of the joint formed by the sacral tuberosity?

A

the accessory sacro-iliac joint

438
Q

What feature is associated with the transverse tubercle of S5?

A

the inferior and lateral (inferolateral) sacral angle

439
Q

What muscles may attach to the lateral sacral crest?

A

multifidus, iliocostalis lumborum

440
Q

What muscle is said to attach to the dorsal surface of sacrum?

A

iliacus

441
Q

What feature is identified on the lateral surface of S1-S3?

A

auricular surface

442
Q

What is the sacral promontory?

A

the bulging anterior surface of the superior epiphyseal rim of S1

443
Q

The continuation of the anterior longitudinal ligament below S3 forms what ligament?

A

the anterior sacrococcygeal ligament

444
Q

The continuation of the posterior longitudinal ligament below S3 forms what ligament?

A

the deep posterior sacrococcygeal ligament

445
Q

What forms the posterior boundary for the fifth sacral spinal nerve intervertebral foramen?

A

sacral cornu, coccygeal cornu, superficial posterior sacrococcygeal ligament and intercornual ligament

446
Q

What forms the anterior boundary for the fifth sacral spinal nerve intervertebral foramen?

A

vertebral body S5, vertebral body Co1, deep posterior sacrococcygeal ligament and intervertebral disc

447
Q

How many synovial joints are typically present at sacrum?

A

four

448
Q

What joint classifications are typically present at sacrum?

A

fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis and synovial plane (diarthrosis arthrodia)

449
Q

What is the homolog for the ligamentum flavum at S5?

A

superficial posterior sacrococcygeal ligament

450
Q

What forms the inferior boundary for the spinal canal?

A

the union of the superficial posterior and deep posterior sacrococcygeal ligaments

451
Q

What ligament is formed by the union of the superficial posterior sacrococcygeal and the deep posterior sacrococcygeal ligaments at Co1?

A

the posterior sacrococcygeal ligament

452
Q

What ligament is a homolog of the intertransverse ligament at S5?

A

lateral sacrococcygeal ligament

453
Q

What ligament divides the sciatic foramen into the greater and lesser sciatic foramina?

A

sacrospinous ligament

454
Q

Which ligament has a broad attachment along the lateral margin of sacrum and coccyx and then attaches to the ischial tuberosity?

A

sacrotuberous ligament

455
Q

Which ligament represents a thickening of the fibrous capsule of the sacro-iliac joint?

A

anterior sacro-iliac ligament

456
Q

Which ligament is the strongest of the sacro-iliac ligaments and is penetrated by dorsal rami of the sacral spinal nerves?

A

interosseous sacro-iliac ligament

457
Q

Which ligament will attach the intermediate sacral crest of S1, lateral sacral crest of S2 to the posterior superior iliac spine?

A

short posterior sacro-iliac ligament

458
Q

Which ligament attaches the lateral sacral crest of S3 and S4 to the posterior superior iliac spine?

A

long posterior sacro-iliac ligament

459
Q

What is the homolog for the inferior articular process and facet at S5?

A

sacral cornu

460
Q

What is the homolog for the superior articular process and facet at Co1?

A

coccygeal cornu

461
Q

What is the homolog for the capsular ligament at S5?

A

intercornual ligament

462
Q

What is the number of coccygeal somites?

A

ten

463
Q

What is the typical number of segments that unite to form the adult coccyx?

A

4 segments

464
Q

When is ossification of coccyx completed?

A

about age 30

465
Q

What bony features are present on the coccyx?

A

all segments are represented by a “vertebral body”; Co1 has a coccygeal cornu and transverse process

466
Q

What is the homolog of the superior articular process and facet on Co1?

A

coccygeal cornu

467
Q

What is the direction of fusion of coccygeal segments?

A

from caudal to cranial, the last segments to fuse together are Co1 and Co2

468
Q

What is the major motion and range of motion for coccyx?

A

flexion - extension, 5-20 degrees

469
Q

How many coccygeal nerves are present in the fetus?

A

typically 5 pairs of coccygeal nerves are present

470
Q

How many coccygeal nerves are present in adults?

A

typically only one pair of coccygeal nerves remain in the adult

471
Q

What is the ganglion impar?

A

a midline sympathetic ganglion

472
Q

What muscles attach to the coccyx?

A

ischiococcygeus and levator ani

473
Q

What ligaments form the posterior boundary for the Co1 spinal nerve intervertebral foramen?

A

superficial posterior sacrococcygeal ligament and intercornual ligament

474
Q

What ligaments form the anterior boundary for the Co1 spinal nerve intervertebral foramen?

A

deep posterior sacrococcygeal ligament and intervertebral disc

475
Q

Superior articular facets of which vertebrae will be oriented backward, upward, and medial?

A

C1, C3-C7, L1-L5, S1

476
Q

Superior articular facets of which vertebrae are oriented back, up, medial, and concave?

A

C1, L1-L5, S1

477
Q

Superior articular facets of which segments will be oriented backward, upward, and lateral?

A

C2, T1-T12

478
Q

Inferior articular facets of which segments will be oriented backward, medial, and downward?

A

C1

479
Q

Inferior articular facets of which segments will be oriented forward, lateral, and downward?

A

C2-C6, T12, L1-L5

480
Q

Inferior articular facets of which segments are oriented forward, lateral, downwaard and convex?

A

T12, L1-L5

481
Q

Inferior articular facets of which segments will be oriented forward, medial, and downward?

A

C7, T1-T11

482
Q

Which segment has the only inferior articular facet to face backward?

A

C1

483
Q

What directions will all superior articular facets face?

A

backward and upward

484
Q

Which segments will have facets that are specifically shaped as concave?

A

C1, L1-L5, S1 superior articular facets

485
Q

Which segments will have facets that are specifically shaped as “convex”?

A

T12, L1-L5 inferior articular facets

486
Q

Which segments will have superior articular facets that are oriented medial or inward?

A

C1, C3-C7, L1-L5, S1

487
Q

Which segments will have superior articular facets that are oriented lateral or outward?

A

C2, T1-T12

488
Q

Which segments will have inferior articular facets that are oriented lateral or outward?

A

C2-C6, T12, L1-L5

489
Q

Which segments will have inferior articular facets that are oriented medial or inward?

A

C1, C7, T1-T11

490
Q

What is the definition of spondylosis?

A

a vertebral condition

491
Q

What is the definition spondylolysis?

A

a vertebral separation or vertebral cleavage

492
Q

What is the definition of spondylolisthesis?

A

a vertebral slippage

493
Q

What is the current limited definition of spondylosis?

A

a vertebral condition that is acquired or age-related

Spinal Anatomy (5 decks)

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