Intervertebral Foramen Flashcards Preview

Spinal Anatomy Test 2 > Intervertebral Foramen > Flashcards

Flashcards in Intervertebral Foramen Deck (23)
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1
Q

What determines the length of the intervertebral foramen?

A

the width of the pedicle

2
Q

What is the average height of the intertransverse foramen?

A

about 13 mm

3
Q

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

A

40%

4
Q

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

A

53%

5
Q

What are the generic contents of the intervertebral foramen?

A

neural tissue, connective tissue, vascular tissue, lymphatic tissue

6
Q

What is the percent of the neural tissue in the intervertebral formamen?

A

from 8 to 50 percent

7
Q

What are medulally feeder arteries?

A

enlarged radicular arteries which join the arterial vasa corona to provide blood for the spinal cord

8
Q

What is the name of the largest medullary feeder artery?

A

the artery of Adamkiewicz or the arteria radicalis magna anterior

9
Q

What are the characteristics of the Artery of Adamkiewicz?

A

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

10
Q

What veins drain the nerve roots toward the intervertebral foramen?

A

the anterior and posterior radicular veins

11
Q

What is a unique histological feature of the veins of the vertebral column?

A

the appear to lack valves

12
Q

What size lymphatics vessels lies in the intervertebral foramen?

A

medium sized lymphatics

13
Q

What types of connective tissue will be present in the intervertebral foramen?

A

adipose tissue and loose areolar connective tissue

14
Q

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

A

the lateral groove and uncinate process

15
Q

What happens to cervical nerve roots between their origin from the spinal cord and exit from the intervertebral foramen?s as it des

A

the descend along the spinal cord

16
Q

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

A

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

17
Q

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

A

the cross-sectional area diminishes after age 50

18
Q

What are the specifics attachment sites for a cervical spinal nerve?

A

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

19
Q

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

A

costotransverse joint

20
Q

What are the largest spinal nerves?

A

L5 and S1 spinal nerves

21
Q

What increases the length of the intervertebral foramen oat L5?

A

lumbosacral tunnel

22
Q

What forms the lumbosacral tunnel?

A

lumbosacral ligament, transverse process of L5 and sacral ala

23
Q

What condition is the result of encroachment on the L5 spinal nerve?

A

the far out syndrome