Craniovertebral Joints & Prevertebral Region Flashcards Preview

SP16 Anatomy Exam 2 > Craniovertebral Joints & Prevertebral Region > Flashcards

Flashcards in Craniovertebral Joints & Prevertebral Region Deck (72)
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1
Q

what are the 2 craniovertebral joints

A

atlanto-occipital joint

atlanto-axial joint

2
Q

what movement does the atlanto-occipital joint contribute to?

A

nodding movement

3
Q

which joint allows tilting of the head, side-to-side

A

atlanto-occipital joint

4
Q

which joint contributes to rotation movement

A

atlanto-axial joint

5
Q

what kind of joint are the 2 craniovertebral joints?

A

synovial joints with no discs

6
Q

what structure the atlanto-axial rotation move around?

A

dens

7
Q

what does the vertebral a arise from?

A

subclavian a

8
Q

what does the vertebral v drain into?

A

brachiocephalic v

9
Q

what do the vertebral artery and vein enter?

A

foramina of C6 and above

10
Q

where do the vertebral veinis arise in?

A

suboccipital triangle

11
Q

what do the vertebral veins form?

A

plexuses

12
Q

what are the 2 pharyngeal plexuses of veins?

A

external and internal plexus

13
Q

where does the external plexus form outside of?

A

pharyngobasilar fascia

14
Q

where does the internal plexus form?

A

between pharyngobasilar fascia and constrictor mm

15
Q

what do the internal and external plexus drain into?

A

pterygoid plexus of vv and IJV

16
Q

what do C1-C4 cervical nerves form?

A

cervical plexus

17
Q

what do C3-C5 nerves form?

A

phrenic nn

18
Q

where do the C3-C5 nerves descend to?

A

anterior scalene mm

19
Q

what do the C5-C8 form?

A

brachial plexus

20
Q

where does CN IX travel to?

A

posterior tongue and pharynx

21
Q

where does CN X travel into?

A

thorax

22
Q

where is CN X found in?

A

carotid sheath

23
Q

what does CN XI travel to?

A

SCM and trapezius

24
Q

where does CN XII travel to?

A

tongue

25
Q

what is in the prevertebral region

A
sympathetic trunk
CN IX X XI XII
cervical spinal nn
vertebral vessels
pharyngeal plexuses of vv
26
Q

what is the logical plane of separation of head and viscera

A

retropharyngeal space

27
Q

what kind of tissue doe the retropharyngeal space contain?

A

loose connective tissue

28
Q

where does CN XII enter through

A

hypoglossal canal

29
Q

CN XII supply?

A

muscles of tongue

30
Q

CN XI supply?

A

SCM and trapezius mm

31
Q

what is the cranial vault lined with?

A

periosteal dura mater

32
Q

does the periosteal dura mater run continously with the spinal column?

A

yes

33
Q

what is beneath the periosteal dura mater

A

tectorial membrane

34
Q

what is the tectorial membrane become inferiorly?

A

posterior longitundinal ligament

35
Q

what is beneath the tectorial membrane?

A

craniovertebral joints and deep ligaments

36
Q

what are the two ligaments that line the spinal cord anteriorly and posteriorly?

A

anterior and posterior longitudinal ligaments

37
Q

what is a superior extension of the anterior longitudinal ligament?

A

anterior atlanto-occipital membrane

38
Q

what is a superior extension of the posterior longitudinal ligament?

A

tectorial membrane

39
Q

where does the anterior atlanto-occipital membrane attach?

A

base of occipital bone superiorly at margin of foramen magnum

40
Q

what covers the anterior arch of atlas inferiorly?

A

anterior atlanto-occipital membrane

41
Q

what is the posterior membrane between atlas and occipital bone called?

A

posterior atlanto-occipital membrane

42
Q

what fills in gaps between posterior vertebral arches?

A

ligamentum flava

43
Q

what are the 2 things that form part of posterior wall of vertebral canal

A

posterior atlanto-occipital membrane

ligamentum flavum

44
Q

what are the 4 deep ligaments

A

transverse ligament of the atlas
cruciform ligament of the atlas
alar ligaments
apical ligament of the dens

45
Q

what is the purpose of the transverse ligament of atlas

A

holds dens of axis (c2) tightly to anterior arch of atlas (c1)

46
Q

if fractures occur at the base of the dens, does transverse ligament of atlas allow them to reunite?

A

nah

47
Q

what are the 3 things that make up the cruciate ligament

A

superior longitudinal band
transverse ligament of atlas
inferior longitudinal band

48
Q

what kind of shape does the cruciate ligament form?

A

cross

49
Q

what band attaches to foramen magnum base

A

superior longitudinal band

50
Q

what band attaches to dens of C2 post

A

inferior longitudinal band

51
Q

where is the alar (check) ligament

A

extends from dens to medial portions of occipital condyles

52
Q

which ligaments are super super strong?

A

alar (check) ligament

53
Q

which ligament helps with the transverse ligament?

A

apical ligament of dens

54
Q

what is the function of the apical ligament of dens and transverse ligament

A

holds dens to the anterior arch of C1

55
Q

where does the apical ligament of dens attach

A

anterior margin of foramen magnum

56
Q

what vein emerges from the jugular foramen

A

internal jugular vein

57
Q

what enters the carotid canal

A

internal carotid artery

58
Q

what gives rise to internal carotid plexus

A

sympathetic trunk

59
Q

what emerges from stylomastoid foramen

A

CN VII

60
Q

which cranial nerves emerge from jugular foramen

A

IX X XI

61
Q

what cranial nerve emerges from hypoglossal canal

A

XII

62
Q

which cranial nerves give rise to superior and inferior ganglia

A

IX X

63
Q

what gives rise to superior cervical ganglion

A

sympathetic trunk

64
Q

what sends off internal carotid plexus

A

sympathetic trunk

65
Q

what innervates stylopharyngeus muscle

A

CN IX

66
Q

what are the 2 branches of the vagus nerve?

A

pharyngeal nerve

superior laryngeal nerve

67
Q

what does the pharyngeal nerve innervate

A

pharynx

68
Q

what does the superior laryngeal nerve innervate

A

larynx

69
Q

what is the pharyngeal plexus of nerves formed by?

A

union of pharyngeal branches of CN IX and CN X

70
Q

what cranial nerve contributes sensory fibers to the pharyngeal plexus

A

CN IX

71
Q

what cranial nerve contributes motor innervations to pharyngeal mm and carries p-symp?

A

CN X

72
Q

where do the sympathetic fibers from the pharyngeal plexus of nerves come from?

A

superior cervical ganglion