cervical and thoracic Flashcards

1
Q

how many cervical, thoracic and lumbar vertebra are there?

A

Cervical: 7
Thoracic: 12
Lumbar: 5

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2
Q

The vertebral column is commonly called what? (2)

A

spine and spinal column

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3
Q

When the vertebra are stacked on one another the vertebral foramina form what?

A

spinal canal

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4
Q

The spinal cord is filled with what?

A

Cerebral spinal fluid

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5
Q

where does the spine start and end ?

A

at the base of the skull (medulla oblongata) and extends to sacrum

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6
Q

at the lower level of L-1 the spinal cord terminates at the ?

A

conus medullaris

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7
Q

In some people the conus medullaris can extend as low as ?

A

L2

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8
Q

To avoid striking the spinal cord,what is a common site for lumbar puncture

A

L3-L4

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9
Q

what kind of disks separate the adult vertebrae

A

Fibrocartilage disks

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10
Q

Fibrocartilage disks account for how much of the vertebral column?

A

about 1/4

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11
Q

what do the fibrocartilage disks do for the vertebrae?

A

they are bound to the vertebra for spine stability

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12
Q

Intervertebral disks consist of an outer and inner layer called ?

A

inner: nucleus pulposus
outer: annulus fibrosus

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13
Q

what is a herniated nucleus pulposus?

A

occurs when the nucleus ruptures and protrdes into the vertebral canal and impinges on a spinal nerve (slipped disk)

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14
Q

Where does a slipped disk normally occur ?

A

most commonly in the lumbar region

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15
Q

in early life the vertebral column consists of how many bones?

A

33 irregularly shaped small bones

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16
Q

how are the bones classified

A

according to the region they occupy

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17
Q

what are the 5 regions of the spine

A

Cervical, thoracic, lumbar, sacral, coccygeal

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18
Q

Cervical vertebrae consists of

A

most superior 7 bones in the region of the neck

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19
Q

Thoracic vertebrae consists of

A

next 12 bones form the mid back region and articular with one of more pair of ribs
older term: dorsal spine

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20
Q

Lumbar vertebrae consists of

A

next 5 vertebrae forms the lower back. They are the largest and strongest in the column (load of body weight increases toward the inferior end of the column

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21
Q

How many sacral segments does a newborn have? how many coccygeal segments?

A

5 sacral segments

3-5 coccygeal segments

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22
Q

An adult has how many bones in the vertebral column?

A

26

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23
Q

Viewed from the side the vertebral column has how many curves that arch posteriorly and anteriorly from the MCP of the body?

A

4 curves

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24
Q

What is a concave curve?

A

a rounded inward or depressed surface

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25
Q

what is a convex curve?

A

is a rounded outward or elevated surface

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26
Q

What sections of the spine have a concave curve?

A

cervical and lumbar

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27
Q

what sections of the spine have a convex curve?

A

thoracic and sacral

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28
Q

What are the primary curves of the body (develop soon after birth)

A

thoracic and sacral

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29
Q

what are the secondary or compensatory curves?

A

Cervical and lumbar

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30
Q

When does the cervial curve being to develop?

A

when a child begins to hold the head up at about 3-4 months

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31
Q

when does the lumbar curve begin to form?

A

when the child beings to walk

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32
Q

what 2 curves are usually more pronounced in women

A

lumbar and sacral

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33
Q

What do the curves do for us?

A

serves to increase strength of vertebral column and maintain balance in upright position

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34
Q

what are the abnormalities of the spine?

A

lordosis, kyphosis, and scoliosis

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35
Q

what does lordosis mean

A

bent backward-any abnormal increase in the posterior concavity of the lumbar or cervical region

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36
Q

what can also describe the normal concavity of the lumbar and cervical spine

A

lordosis

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37
Q

what can an abnormal increase in curvature result from?

A

pregnancy, obesity, poor posture, rickets, and tuberculosis of the spine

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38
Q

what is Kyphosis

A

any abnormal increase in the posterior convexity of the thoracic curve also known as hunchback

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39
Q

what projection will best show kyphosis?

A

lateral projection

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40
Q

what can cause kyphosis

A

may be caused by compression fracture of anterior edges of vertebral bodies in osteoporotic patients

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41
Q

Which way does the spine curve in right and left handed people?

A

right handed: right

Left handed: left

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42
Q

What is any abnormal curvature of the spine called ?

A

scoliosis

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43
Q

In a scoliosis patient why does the column develop a second curve in the opposite direction

A

to keep the head centered over the feet

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44
Q

a typical vertebra is composed of two main parts which are?

A

body and vertebral arch

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45
Q

What is the body of a vertebra

A

thick, weight bearing anterior portion of the vertebra (superior and inferior surfaces are covered by a thin plate of articular cartilage

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46
Q

what is the vertebral arch

A

consists of a ring or arch of bone extending posteriorly from the vertebral body

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47
Q

The body and the arch encloses a space called

A

vertebral foramen

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48
Q

What is a pedicle?

A

extend posteriorly from the body and form the sides of the vertebral arch

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49
Q

what does pedicle also mean?

A

little feet

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50
Q

what borders of the pedicles are concave

A

the superior and inferior borders

51
Q

The concave border of the upper surface of the pedicle is known as ? the lower surface?

A

upper: superior vertebral notch
lower: inferior vertebral notch

52
Q

When the vertebrae are stacked these notches line up and the two concave areas form a single opening called

A

intervertebral foramina

53
Q

What passes through the intervertebral foramina

A

spinal nerves and blood vessels

54
Q

The pedicles unite posteriorly with?

A

laminae

55
Q

what is the laminae?

A

the posterior part of the vertebral arch that are somewhat flat bones

56
Q

What is the transverse process?

A

projects laterally and slightly posteriorly from the junction of the pedicles and laminae

57
Q

what is the spinous process?

A

extends posteriorly from the midline junction of the laminae

58
Q

what do the spinous and transverse process do?

A

serves as an attachment for muscles

59
Q

What is a congenital defect in which the laminae fail to unite posteriorly as the midline

A

spina bifida

60
Q

how many articular processes are on a vertebra

A

4, two articular surfaces superior and two inferior that arise at the junction of the pedicles and laminae to articulate with above and below vertebra

61
Q

what are the articular surfaces called?

A

facets

62
Q

Each inferior articular surface has a facet on its ____ surface and the superior articular surface has a facet on its ___ surface?

A

inferior: anterior
superior: posterior

63
Q

The articulations between the articular processes of the vertebral arches are referred to as?

A

zygapophyseal joints (or interarticular facet joints)

64
Q

what is the zygapophyseal joints formed by?

A

the articulation of the superior articular process of one vertebra to the inferior articular process of the vertebra above

65
Q

What two parts of the vertebra must be demonstrated radiographically by the appropriate projection in each of the 3 major portions of the vertebral column

A

zygapophyseal joints and the intervertebral foramina

66
Q

what are the 3 joints of the vertebral column

A

intervertebral joints, zygapophyseal joints and costal joints

67
Q

what joint could respiration not occur ?

A

costal joints

68
Q

what are the intervertebral joints

A

slightly moveable joints between the vertebral bodies

69
Q

what are the costal joints

A

are located in the thoracic region, the 12 ribs articulate with the transverse processes and the vertebral bodies

70
Q

what does the costovertebral joint consist of

A

the head of the rib articulating with the facets on the vertebral body

71
Q

what does the costotransverse joint consist of

A

between the tubercle of the rib and the transverse process of the vertebra

72
Q

What 3 cervical vertebra are atypical

A

1,2,7

73
Q

Why are C1-C2 & C7 atypical

A

C1-C2: modified to fit the skull

C7: modifie to joint to the thoracic spine

74
Q

C1 is also called

A

atlas

75
Q

C2 is also called

A

Axis

76
Q

what are the typical vertebra

A

C3-C6

77
Q

What are some characteristics of cervial vertebra

A

bifid spinous process tips, overlapping bodies, three foramina, transverse foramina

78
Q

Whats forms the superior and inferior articular processes

A

at the point where the laminae and pedicles meet

79
Q

what is the short column between the superior and inferior articular processes called

A

articular pillar

80
Q

what is the articular pillar of C1 called?

A

lateral mass

81
Q

what projection visualizes the cervical (c2-c7) zygapophyseal joints? why?

A

the lateral projection, because they lie at right angles to the MSP

82
Q

what projection can you see the zygapophyseal joints of C1 -C2?

A

true AP projection

83
Q

where are the zygapophyseal joints located

A

between the pillars of each vertebra

84
Q

what forms the intervertebral foramina?

A

when each vertebra are stacked on one another the superior vertebral notch meets the inferior vertebral notch of another vertebra form the intervertebral foramina

85
Q

At what angle from the MSP does the cervical intervertebral foramina lie?

A

45 degrees

86
Q

Because of the shape and the overlapping cervical vertebra they are also directed as what kind of angle

A

15 inferior angle

87
Q

How would you open up and radiographically demonstrate the cervical intervertebral foramina (AP projection)?

A

a 45 degree oblique projection with a 15 degree cephalad angle

88
Q

what is the name atlas derived from?

A

a greek god who bore world upon his shoulders

89
Q

what vertebra has no body?

A

atlas

90
Q

The atlas has no body, instead it has an?

A

anterior arch

91
Q

Where is the small anterior tubercle located?

A

on the anterior arch of C1

92
Q

what is the articulation between the 1st cervical bone and the skull called

A

atlantooccipital articulation

93
Q

what bears a small bifid posterior tubercle instead of 2 laminae?

A

posterior tubercle

94
Q

what support the weight of the head and these portions are bulky and solid part of C1?

A

lateral masses

95
Q

the ring formed by the anterior and posterior arches is divided into anterior and posterior portions by a ligament called?

A

transverse atlantal ligament

96
Q

what does the anterior portion of atlantal ring of C1 hold?

A

the dens

97
Q

what does the poster potion of the atlantal ring of C1 hold?

A

transmits the proximal spinal cord

98
Q

what does the odontoid process do?

A

acts as a pivot or body for the atlas

99
Q

what is the 7th cervical vertebra called

A

vertebra prominens

100
Q

what are the typical thoracic vertebra ?

A

T5-T8

101
Q

what is the costovertebral joint

A

the head of the rib articulates with the costal facets

102
Q

what is the costotransverse joint

A

where the tubercle of the rib articulates with the transverse process of the vertebra

103
Q

what thoracic bodies contain demifacets both superiorly and inferiorly?

A

2nd-8th

104
Q

How many demifacets does T9 have

A

only 1 superiorly

105
Q

what do 10,11,12 have for costovertebral joints?

A

a single facet on the superior margin

106
Q

In the thoracic vertebrae the zygapophyseal joints form an angle of __ to the MSP?

A

70-75 from msp

107
Q

For radiographic demonstration of the zygapophyseal joints in the thoracic vertebra how many degrees from the lateral position must the patient be rotated?

A

15-20 from lateral (70-75 from tabletop)

108
Q

The LPO position of the thoracic vertebra “opens up” which side of the zygapophyseal joints?

A

the right side

109
Q

The intervertebral foramina on the thoracic vertebra are located at what degree to the MSP?

A

90 degrees

110
Q

what projection are the intervertebral foramina of the thoracic vertebra best demonstrated?

A

true lateral

111
Q

what projection shows the zygapophyseal joints of C1-C2?

A

AP open mouth

112
Q

The RPO position of the thoracic vertebra “opens up” which side of the zygapophyseal joints & what CR angle?

A

left side

113
Q

To open up the intervertebral foramina of the cervical vertebra, what angle would you use on an LPO &RPO position?

A

15 degree cephalad

114
Q

To open up the intervertebral foramina of the cervical vertebra, what angle would you use on an LAO &RAO position?

A

15 degree caudad

115
Q

To open up the intervertebral foramina of the cervical vertebra, what position would use to open the right side?

A

RAO, LPO

116
Q

To open up the intervertebral foramina of the cervical vertebra, what position would use to open the left side?

A

LAO,RPO

117
Q

The mastoid tip (or 1 in below EAM) correspond to what level?

A

C1

118
Q

With the head in the neutral position the gonion is at the level of ?

A

C3

119
Q

Most prominent part of thyroid cartilage (adams apple) is at approximate the level of ?

A

C5 (varies between C4-C6)

120
Q

vertebra prominens is at the same level as the body of ?

A

T1

121
Q

location of jugular notch?

A

T2-T3

122
Q

location of sternal angle

A

T4-T5

123
Q

location of inferior angle of scapula

A

T7

124
Q

location of xiphoid process

A

T9-T10