Anatomy Unit 3 - Sheet10 Flashcards

1
Q

end of spinal cord

A

L2

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2
Q

location of CSF

A

subarachnoid space

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3
Q

anterior spinal artery

A

branches of vertebral artery; runs through ventral median fissure

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4
Q

posterior spinal arteries

A

branches of posterior inferior cerebellar arteries and vertebral artery; anastomose with anterior spinal artery

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5
Q

radicular arteries

A

accompany dorsal and ventral roots of spinal nerves0

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6
Q

spondylolisthesis

A

separation of spinous process; lamina; inferior articular process from rest of vertebrae; typically L4 or L5 slippage

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7
Q

what runs through foramen transversarium

A

vertebral artery; sympathetic and venous plexi

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8
Q

atlas anterior arch

A

where anterior longitundinal ligament attaches

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9
Q

atlas lateral mass

A

superior facet where occiput articulates face upward and medial; transverse ligament attaches to medial aspect; inferior facets for articulation with C2

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10
Q

transverse ligament of atlas

A

separates dens from vertebral foramen

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11
Q

anterior longitudinal ligament attachments

A

discs; margins of vertebral bodies; loose attachment to intermediate levels of vertebral bodies

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12
Q

posteior longitudinal ligament attachments

A

discs; margins of vertebral bodies

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13
Q

SI joint cartilage

A

hyaline on sacrum; fibrocartilage on ilium

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14
Q

superficial cutaneous branches of cerivcal plexus

A

lesser occipital (C2); greater auricular (C2-3); transverse cervical (C2-3); supraclavicular (C3-4)

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15
Q

lesser occipital nerve

A

C2; provides sensation posterior to ear; wraps underneath SCM then goes superior; posterior to greater auricular

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16
Q

greater auricular nerve

A

C2-3; sensation of ear; wraps underneath SCM then goes superior; anterior to lesser occipital

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17
Q

transverse cervical nerve

A

C2-3; branches lie on top of SCM

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18
Q

supraclavicular nerve

A

C3-4; just posterior to SCM

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19
Q

muscles innervated by deep motor branches of cervical plexus; anterior medial

A

rectus capitus lateralis and anterior (C1-2); longus capitus (C1-3); longus colli (C2-7)

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20
Q

muscles innervated by deep motor branches of cervical plexus; anterior lateral

A

SCM (via accessory nerve C1-2); trap (via accessory nerve C2-4); levator scap (C3-4 and via dorsal scapular C4-5); middle and anterior scalenes

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21
Q

phrenic nerve

A

C3-5; lies on top of anterior scalene; part of cervical plexus

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22
Q

commuticating branches of cervical plexus

A

to vagus and hypoglossal nerves; nerves to thyrohyoid and geniohyoid run next to hypoglossal but not part of it

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23
Q

ansa cervicalis

A

superior root (C1) descends from hypoglossal nerve; innervates superior belly of omohyoid; inferior root from C2-3; loop innervates sternohyoid sternothyroid and inferior belly of omohyoid; loop lies on top of internal jugular vein

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24
Q

bones of the orbit

A

frontal zygomatic maxilla externally; internally sphenoid lacrimal palatine ethmoid

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25
Q

cranial nerves in the orbit

A

optic (sight); oculomotor (intrinsic mucles; branch to ciliary ganglion); trochlear (superior oblique muscle); abducens (lateral rectus and abducent mucles); maxillary (leaves as infraorbital nerve; goes to pterygopalatine ganglion); opthalmic (anterior and posterior ethmoid nerves; branches to ciliary ganglion

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26
Q

arterial supply of eye

A

opthalmic artery is branch off internal carotid supplies extrinsic eye mucles; external carotid branches supply outside the orbit

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27
Q

tarsus of eye

A

skeleton of eyelids; provide stability for eyelid margin

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28
Q

2 muscles in upper eyelid

A

levator (innervated by oculomotor nerve); Mueller (innervated by sypathetic nerves)

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29
Q

TMJ joint types

A

upper: articular emminance to articular disc gliding joint; lower: disc to condyle of mandible hinge joint

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30
Q

motion of TMJ disc when opening mouth

A

anterior

31
Q

posterior attachment of TMJ disc

A

retrodiscal lamina; superior portion attached to tympanic plate at posterior glenoid fossa; inferior portion attached to neck of condyle; both portions control how far you can open your mouth

32
Q

retrodiscal pad

A

between inferior and superior portions; provides rich blood and neural supply to periphery of disc (middle portion is avascular and aneural)

33
Q

most important ligament to limit motion of TMJ

A

temporalmandibular (lateral ligament); stablilizes lateral side of disc; from articular emminence to neck of condyle; inner portion attaches to disc

34
Q

stylomandibular ligament

A

styloid process to posterior border of ramus of mandible; inserts between masseter and medial pterygoid

35
Q

sphenomandibular ligament

A

from spine of sphenoid bone to middle surface of ramus of mandible (medial surface)

36
Q

structures that attach to TMJ articular disc

A

lateral pterygoid (controls posterior motion while closing); temporomandibular ligament; inferior retrodiscal lamina limits anterior translation; superior retrodiscal lamina applies posterior force on disc when closing;

37
Q

normal motion of TMJ disc

A

slightly more motion due to rotation; opening 40-50mm; retrodiscal tissue stretches 6-9mm; rotation happens first then translation

38
Q

innervation of TMJ

A

primarily from mandibular branch of Trigeminal

39
Q

arterial supply for TMJ

A

superficial temporal and maxillary arteries

40
Q

translational limits of mandibular motion

A

6-9mm protrusion; 3mm retrusion; 8-11mm lateral deviation

41
Q

fiber type of iliocostalis and longissimus

A

thoracic 75% slow twitch; short fibers long tendons; lumbar 50% fast/slow

42
Q

angle of pull of pars lumborum neutral vs flexed spine

A

neutral: 45deg; flexed: 10deg; flexed has higher compressive forces

43
Q

multifidi muscle type

A

mostly slow twitch; constant activity during low loads

44
Q

upper cervical region

A

atlas and axis; rotation; flexion and extension

45
Q

lower cervical

A

C3-7; flexion; rotation; sidebending

46
Q

forward head alignment

A

forward translation and increased cervical extension; causes compression on facet joints and microtrauma to articular cartilage

47
Q

flexion/extension in cervical spine accessory motion

A

coupled motion of translation and saggital rotation about frontal axis

48
Q

rotation/sidebending accesory motion in cervical spine

A

coupled motion of sidebending and rotation in same direction about a vertical axis

49
Q

intrinsic upper neck flexors

A

rectus capitus anterior and lateralis; longus capitus

50
Q

intrinsic lower neck flexor

A

longus colli

51
Q

extrinsic neck flexors

A

scalenes and SCM; cause more anterior translation and less saggital rotation than intrinsics

52
Q

intrinsic neck extensors

A

suboccipitals; semispinalus capitus and cervicus; splenius capitis and cervicus; longissimus capitis and cervicis

53
Q

extrinsic neck extensors

A

levator scap and upper trap

54
Q

suboccipital triangle

A

medial: rectus capitus posterior major; superior and lateral: obliquus capitus superior; inferior and lateral: obliquus capitus inferior. Contains vertebral artery and first cervical nerve

55
Q

boundaries of anterior abdominal wall

A

5th intercostal space; xiphoid process; infrasternal angle; iliac crest; asis; iguinal ligament; pubis

56
Q

umbilicus spinal level

A

L3-4 interspace

57
Q

paths of intercostal nerves in abdominal region

A

between internal oblique and transversus

58
Q

cutaneous innervation of abdomen

A

T4-nipple; T10-umbilicus; L1-pubic bone

59
Q

abdominal muscle layers

A

superficial to deep: external oblique; internal oblique; transversus

60
Q

arcuate line

A

above line rectus runs through aponeurosis of internal oblique; below line rectus is deep to all other abdominal layers

61
Q

external oblique

A

O: external surfaces of lower 8 ribs; interdigitates with serratus anterior and lats; I: most fibers insert into aponeurosis; fibers run down and medial; N: ventral rami of T6-12

62
Q

internal oblique

A

O: posterior layer of throracodorsal fascia; iliac crest; inguinal line; I: cartilages of ribs 7-10 and aponeurosis; N: ventral rami T6-12 L1; join with transversus aponeurosis to form conjoint tendon

63
Q

transversus

A

O: deep surface of costal cartilage of lower 6 ribs; I: thoracolumbar fascia iliac crest and inguinal ligament; N: ventral rami T6-12 L1

64
Q

rectus abdominis

A

O: pubic symphysis and pubic crest; I: xyphoid process and costal cartilage of ribs 5-7

65
Q

EO + IO opposite sides

A

flex and rotate trunk

66
Q

IO bilateral + RA

A

trunk curl; increase infrasternal angle; posteriorly tilt pelvis

67
Q

EO bilateral + RA

A

posterior tilt pelvis; decrease infrasternal angle

68
Q

IO; EO; RA

A

stabilize spine against anterior shear of psoas

69
Q

unilateral IO + EO

A

lateral pelvic tilt; lateral trunk flexion

70
Q

what attaches on mastoid process of temporal bone?

A

posterior belly digastric; longissimus capitus; SCM

71
Q

what attaches on transverse processes?

A

semispinalis capitus; longus capitus; longissimus; iliocostalis; scalenes; longus colli; multifidi; quadratus lumborum; intertransversarii; rotatores; splenius cervicis

72
Q

what attches on spinous processes?

A

splenius capitus; multifidi; serratus posterior inferior and superior; rectus capitus posterior minor (C1); rectus capitus posterior major (C2); O and I of spinalis; interspinalis; spleneius cervicis

73
Q

what attaches into thoracolumbar fascia

A

longissimus; iliocostalis; internal oblique; transverse abdominal