Exam 1-Vertebral Foramen Flashcards Preview

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Flashcards in Exam 1-Vertebral Foramen Deck (57):
1

What is the typical shape/outline of the vertebral foramen at each region of the spinal column/vertebral column?

cervical-triangluar
thoracic-oval
lumbar-triangluar
sacrum-trianglular

2

At what vertebral level will the spinal cord terminate?

L1

3

At what vertebral level will the dural sac typically terminate?

S2

4

Wht are the segmental arteries?

the arteries whose branchessupply the vertebra or segment

5

Identify all segmental arteries

vertebral, ascending cervical, deep cervical, superior (highest) intercostal, posterior intercostal, subcostal, lumbar, iliolumbar, lateral sacral and median (middle) sacral

6

What are the segmental arteries of the cervical spine?

the verterbal artery, ascending cervical artery and deep cervical artery

7

What are the segmental arteries of the thoracic spine?

the deep cervical artery, superior (highest) intercostal artery, posterior intercostal artery and subcostal artery

8

What are the segmental arteries of the lumbar spine?

the lumbar arteries, ililumbar artery, lateral sacral artery and median (middle) sacaral artery

9

What segmental levels are supplied by the verterbal artery?

C1-C6

10

What segmental levels are suppplied by the ascending cervical artery?

C1-C6

11

What segmental levels are supplied by the deep cervical artery?

C7-T1

12

What segmental levels are supplied by the superior (highest) intercostal artery?

T1, T2

13

What segmental levels are suppliedv by the posterior intercostal artery?

T3-T11

14

What segmental level(s) is/are supplied by the subcostal artery?

T12

15

What segmental levels are supplied by the lumbar arteries?

L1-L4

16

What segmental levels are supplied by the median (middle) sacral artery?

L5, S1-S5, coccyx

17

What segmental levels are supplied by the iliolumbar artery?

L5, S1-S5, coccyx

18

Which branches of thespinal artery supply the contentsof the epidural space?>

osseous arteries, anterior spinal cnala artery, posterior spinal canal artery

19

What arteries are observed in the epidural space near the posterior longitudinal ligament?

anterior spinal canal artery and plexus

20

What arteries are observed in the epidural space near the ligamentum flavum?

posterior spinal canal artery and plexus

21

Which branches of the spinal canal artery supply the contents of the subarachnoid space?

anterior radicular artery, posterior radicular artery, anterior medullary feeder artery, posterior medullary feeder artery

22

Which vessel will supply the venteral/anterior nerve rootlet and nerve root?

anterior radicular artery

23

Which vessel will supply the dorsal/posterior nerve rootlets,nerve root and nerve root ganglion?

posterior radicular artery

24

What is the name given to the artery that lies in front of the spinal cord along its length?

anterior spinal artery

25

The anterior spinal artery is a branch of which artery?

the vertebral artery

26

Is the anterior spinal artery a single continuous atery along the spinal cord?

no

27

As the anterior spinal artery continues along the spinal cord, which arteries unite along its length to give the appearance of a single continuous vessel?

anteior medullary feeder arteries

28

The posterior spinal artery is a branch of what artery?

the posterior inferior cerebellar artery

29

What is the position of the posterior spinal artery relative to the spinal cord?

it lies in the posteriolateral sulcus along the spinal cord

30

Is the posterior spinal artery a single, continuous artery along the spinal cord?

no

31

As the posterior spinal artery continues along the spinal cord, which arteries unite along its length to give the appearance of a single continuous vessel?

posterior medullary feeder arteries

32

What changes to the arterial vasa corona occur between C3 and C6?

right and left anterior spinal arteries fuse to become a single median anterior spinal artery, the right and left posterior spinal arteries are unchanged, and the 4 communicating arteries are reduced to 3 communicating arteries

33

What arterial vasa corona branches supply gray matter and most of the spinal cord?

ventral,central,sulcal perforating perforating arteries

34

What intramedullary branchessupply about 1/3 of the spinal cord?

pial perforating arteries

35

What is the source for pial perforating arteries?

the pial plexus

36

What is the primary artery supplementing the arterial vasa corona?

anteior medullary feeders and posterior medullary feeders

37

What vessels drain the spinal cord?

pial veins

38

Which vessels will drain the venous vasa corona?

anterior medullary veins, posterior medullary veins

39

Which vessels will drain the ventral/anterior nerve roots?

anterior radicular veins

40

Which vessels will drain the dorsal/posterior nerve roots?

posterior radicular veins

41

What vessel will drain the dorsal/posterior nerve root ganglion?

posterior radicular veins

42

What veins will lie in the subarachnoid space?

pial veins, venous vasa corona, anterior longitudinal veins, communicating veins, anterior medullary veins, posterior medullary veins, anterior radicular veins, posterior radicular veins

43

What veins are observed in the epidural space near the posterior longitudinal ligament?

anterior internal vertebral plexus, basivertebral vein

44

What veins are observed in the epidrual space near the ligementum flavum?

posterior internal vertebral venous plexus

45

What venous vessels are identified in the intervertebral foramen?

intervertebral veins

46

Identify the meninges of the spinal cord (spinal medulla or medulla spinalis)

dura mater-tough mother
arachnoid mater-spider mother
pia mater-tender of delicate mother

47

Name and locate each space formed between the osseous vertebral foramen and the spinal cord (spinal medulla or medulla spinalis)

epidural space-between the vertebral foramen and the dura mater

subdural space-between the dura mater and subarachnoid mater

subarachnoid space-between the dura mater and pia mater

48

What is the name given to the fluid within the epidural space?

interstitial fluid

49

What are the contents of the epidural space?

anterior and posterior spinal canal artery and plexus

anterior and posterior internal vertebral venous plexus

basivertebral vein

Recurrent meningeal/sinu-vertberal/sinus vertebral nerve

Hofmann/anterior dural/meningovertebral ligaments

ligamentum flavum

posterior longitudinal ligament

50

What of the contents of the epidural space will be found nearthe vertebral body?

anterior spinal canal artery and plexus

anterior internal vertebral venous plexus

basivertebral vein

Recurrent meningeal/sinu-vertberal/sinus vertebral nerve

Hofmann/anterior dural/meningovertebral ligaments

posterior longitudinal ligament

51

Which of the contents of the epidural space are more likely to be located near or around the posterior longitudinal ligament?

anterior spinal canal artery and plexus

anterior internal vertebral venous plexus

basivertebral vein

Recurrent meningeal/sinu-vertberal/sinus vertebral nerve

Hofmann/anterior dural/meningovertebral ligaments

52

Which of the contents of the epidural space will be found near the lamina?

posterior spinal canal artery and plexus

posterior internal vertebral venous plexus

ligamentum flavum

53

What is the name given to the fluid within the subarachnoid space?

cerebrospinal fluid

54

What are the typical contents of the subarachnoid space down to level C3?

Arteries:
anterior spinal
posterior spinal
communicating
aterial vasa corona
pial perforating
central/sulcal perforating
anterior radicular
posterior radicular
anterior medullary feeder
posterior medullary feeder
dentate/denticulate ligament

Veins:
anterior longitudinal
posterior longitudinal
communicating
venous vasa corona
pial
anterior radicular
posterior radicular
anterior medullary
posterior medullary
intervertebral

55

What contents of the subarachnoid space are changed below level C6?

the arterial vasa corona consists of 1 anterior spinal artery, 2 posterior spinal arteries, and 3 communicating arteries

56

What is the name given to the lateral extension of the pia mater along the spinal cord?

dentate (denticulate) ligamen

57

What is the unique feature of the veins along the spinal canal?

they lack the bicuspid valve of typical veins