Intervertebral Foramen Flashcards Preview

Spinal Anatomy Test 2 > Intervertebral Foramen > Flashcards

Flashcards in Intervertebral Foramen Deck (23):
1

What determines the length of the intervertebral foramen?

the width of the pedicle

2

What is the average height of the intertransverse foramen?

about 13 mm

3

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

40%

4

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

53%

5

What are the generic contents of the intervertebral foramen?

neural tissue, connective tissue, vascular tissue, lymphatic tissue

6

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

from 8 to 50 percent

7

What are medulally feeder arteries?

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

8

What is the name of the largest medullary feeder artery?

the artery of Adamkiewicz or the arteria radicalis magna anterior

9

What are the characteristics of the Artery of Adamkiewicz?

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

What veins drain the nerve roots toward the intervertebral foramen?

the anterior and posterior radicular veins

11

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

the appear to lack valves

12

What size lymphatics vessels lies in the intervertebral foramen?

medium sized lymphatics

13

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

adipose tissue and loose areolar connective tissue

14

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

the lateral groove and uncinate process

15

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

the descend along the spinal cord

16

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

17

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

the cross-sectional area diminishes after age 50

18

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

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

19

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

costotransverse joint

20

What are the largest spinal nerves?

L5 and S1 spinal nerves

21

What increases the length of the intervertebral foramen oat L5?

lumbosacral tunnel

22

What forms the lumbosacral tunnel?

lumbosacral ligament, transverse process of L5 and sacral ala

23

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

the far out syndrome