Exam 2 Inter-Vertebral Foraman Flashcards Preview

Spinal Anatomy Summer 2015 > Exam 2 Inter-Vertebral Foraman > Flashcards

Flashcards in Exam 2 Inter-Vertebral Foraman Deck (30)
1

What is the average height of the inter-vertebral foramen

About 13 mm

2

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

40%

3

What percent of total vertebral column length does all intervertebral foramina height from occiput through co1equal

53%

4

What are the generic contents of the inter-vertebral foramen

Neural tissue connective tissue vascular tissue lymphatic tissue

5

What is the percent of Neural tissue in the intervertebral foramen

From 8 to 50%

6

What are the characteristics of the artery of Adamkiewicz

It is a left side interior medullary feeder Artery located in the T9 T10 intervertebral foramen and the primary vascular supply to the lumbar enlargement

7

What will the intervertebral veins drain into

The external vertebral venous plexus or Batsons plexus

8

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

They appear to lack valves

9

What size lymphatic vessel lie in the intervertebral foramen

Medium size lymphatics

10

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

Adipose tissue and loose areolar connective tissue

11

What parts of the cervical vertebra will modify the Intervertebral foramen

The lateral groove and uncinate process

12

What happens to the cervical nerve roots between their origin from the spinal cord and exit from the intervertebral Foramen

They descend along the spinal cord

13

What determines the length of the intervertebral foramen

The width of the pedicle

14

What is the shape of the lumbar intervertebral foramen

Reniform or earlobe shape

15

What is the relationship of lumbar nerve root size to enter vertebral foramen side below L4

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

16

What is the relationship of lumbar nerve root size to inter vertebral foramen size below L4

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

17

What are the largest spinal nerves

L5 and S1 spinal nerves

18

What increases the length of intervertebral foramen at L5

The lumbosacral tunnel

19

What forms the lumbosacral tunnel

The lumbosacral ligament
transverse process of L5
sacral all

20

What condition is the result of encroachment on L5 spinal nerve

The far out syndrome

21

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

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

22

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

A completely osseous boundary exists

23

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

24

What is the relationship of the lumbar nerve roots size to intervertebral foramen size above L4

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

25

What is unique about the relationship of spinal nerve to enter vertebral foramen at S5-C01

There are two nerves present S5 nerves and CO1 nerve

26

What are some examples of destructive lesions of the vertebral body

Tuberculosis hemangioma osteoporosis

27

What may reduce the impact of the intervertebral disc loss of integrity on the intravertebral foramen in the cervical and thoracic spine

The joint of luschka in the cervical's
the costocentral joint in the thoracic

28

What are examples of osteophyte formation that influence to intervertebral foramen

The bony spurs of the vertebral body and the para articular processes on the lamina

29

What are examples of acquired alterations of the spinal curves identified in class

Obesity pregnancy and the use of heavy backpacks

30

What is the recommended weight of the backpack compared to individual weight for the developing spine

Back Pack weight should not exceed 10% of individual bodyweight

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