Intervertebral foramen (general/regional) Flashcards Preview

Spinal Exam 2 questions > Intervertebral foramen (general/regional) > Flashcards

Flashcards in Intervertebral foramen (general/regional) Deck (29)
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1
Q

determines length of the intervertebral foramen

A

width of the pedicle

2
Q

average height of the intervertebral foramen

A

about 13 mm

3
Q

percent total vertebral column length does “true” intervertebral foramina height from C2-S1 equal

A

40%

4
Q

percent of total vertebral column length does all intervertebral foramina height from occiput-Co1 equal

A

53%

5
Q

generic contents of the intervertebral foramen

A

neural tissue, connective tissue, vascular tissue, lymphatic tissue

6
Q

percent of neural tissue in the intervertebral foramen

A

8-50%

7
Q

characteristics of artery of Adamkiewicz

A

left side, anterior medullary feeder artery, located in the T9/T10 intervertebral foramen, and the primary vascular supply to the lumbar enlargement

8
Q

what will the intervertebral veins drain into

A

external vertebral venous plexus or Batsons plexus

9
Q

unique histological feature the veins of the vertebral column

A

lack valves

10
Q

size of lymphatic vessels that lie in the intervertebral foramen

A

medium sized lymphatics

11
Q

types of connective tissue that will be present in the intervertebral foramen

A

adipose tissue and loose areolar connective tissue

12
Q

parts of the cervical vertebra that will modify the intervertebral foramen

A

lateral groove and uncinate process

13
Q

what happens to cervical nerve roots between their origin from the spinal cord and exit from the intervertebral foramen

A

they defend along the spinal cord

14
Q

relationship between aging and cervical spine nerve root characteristics

A

length of the nerve root increases as it depends from its apparent origin on the spinal cord, but the cross-sectional area of the nerve root decreases

15
Q

relationship between aging and cervical spine intervertebral foramen size

A

cross-sectional area diminishes after age 50

16
Q

specific attachment sites for a cervical spinal nerve

A

sulcus for the ventral primary rams on the costotransverse bar and the vertebral artery

17
Q

what contributes to the anterior boundary of the thoracic intervertebral foramen

A

costocentral joint

18
Q

shape of the lumbar intervertebral foramen

A

reniform or earlobe-shaped

19
Q

relationship of lumbar nerve root size to intervertebral foramen size above L4

A

nerve root size will account for less than 22% of the available size

20
Q

relationship of lumbar nerve root size to intervertebral foramen size below L4

A

nerve root size will account for up to 30% of the available size

21
Q

which are the largest spinal nerves

A

L5 and S1

22
Q

increases the length of the intervertebral foramen at L5

A

lumbosacral tunnel

23
Q

forms the lumbosacral tunnel

A

lumbosacral ligament, transverse process of L5 and sacral ala

24
Q

condition that is result of encroachment on the L5 spinal nerve

A

far out syndrome

25
Q

what is the relationship between intervertebral disc herniation and lumbar spinal nerves

A

intervertebral disc above the intervertebral foramen is usually the source of damage

26
Q

what is unusual about the sacral intervertebral foramen compared to other intervertebral foramina

A

completely osseous boundary exists

27
Q

what is more likely to cause nerve irritation at the sacral intervertebral foramen

A

tilt or position of the entire sacrum relative to the pelvis

28
Q

relationship of lumbar nerve root size to intervertebral foramen size above L4

A

nerve root size will account for less than 22% of the available size

29
Q

what is unique about the relationship of spinal nerve to intervertebral foramen at S5-Co1

A

there are 2 nerves present, S5 nerve and Co1 nerve