intervertebral foramen: regional characteristics Flashcards Preview

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Flashcards in intervertebral foramen: regional characteristics Deck (15):
1

what parts of the cervical vertebra will modify the intervertebral foramen?

lateral groove and uncinate process

2

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

they descend along the spinal cord

3

what is the relationship between aging and cervical spine nerve root characteristics?

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

4

what is the relationship between aging and cervical spine intervertebral foramen size?

the cross-sectional area diminishes after age 50

5

what are the specific attachment sites for a cervical spinal nerve?

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

6

what contributes to the anterior boundary of the thoracic intervertebral foramen?

costocentral joint

7

which are the largest spinal nerves?

L5 and S1 spinal nerves

8

what increases the length of the intervertebral foramen at L5?

lumbosacral tunnel

9

what forms the lumbosacral tunnel?

lumbosacral ligament, transverse process of L5 and sacral ala

10

what condition is the result of encroachment on the L4 spinal nerve?

the far out syndrome

11

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

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

12

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

a completely osseous boundary exists

13

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

the tilt or position of the entire sacrum relative to the pelvis

14

what is the relationship of lumbar nerve root size to intervertebral foramen size above L4?

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

15

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

there are two nerves present, S5 nerve and Co1 nerve