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

determines length of the intervertebral foramen

width of the pedicle

2

average height of the intervertebral foramen

about 13 mm

3

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

40%

4

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

53%

5

generic contents of the intervertebral foramen

neural tissue, connective tissue, vascular tissue, lymphatic tissue

6

percent of neural tissue in the intervertebral foramen

8-50%

7

characteristics of artery of Adamkiewicz

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

8

what will the intervertebral veins drain into

external vertebral venous plexus or Batsons plexus

9

unique histological feature the veins of the vertebral column

lack valves

10

size of lymphatic vessels that lie in the intervertebral foramen

medium sized lymphatics

11

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

adipose tissue and loose areolar connective tissue

12

parts of the cervical vertebra that will modify the intervertebral foramen

lateral groove and uncinate process

13

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

they defend along the spinal cord

14

relationship between aging and cervical spine nerve root characteristics

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

relationship between aging and cervical spine intervertebral foramen size

cross-sectional area diminishes after age 50

16

specific attachment sites for a cervical spinal nerve

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

17

what contributes to the anterior boundary of the thoracic intervertebral foramen

costocentral joint

18

shape of the lumbar intervertebral foramen

reniform or earlobe-shaped

19

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

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

20

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

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

21

which are the largest spinal nerves

L5 and S1

22

increases the length of the intervertebral foramen at L5

lumbosacral tunnel

23

forms the lumbosacral tunnel

lumbosacral ligament, transverse process of L5 and sacral ala

24

condition that is result of encroachment on the L5 spinal nerve

far out syndrome

25

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

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

26

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

completely osseous boundary exists

27

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

tilt or position of the entire sacrum relative to the pelvis

28

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

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

29

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

there are 2 nerves present, S5 nerve and Co1 nerve