Exam 2 Inter-Vertebral Foraman

Question 1

What is the average height of the inter-vertebral foramen

Answer 1

About 13 mm

Question 2

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

Answer 2

40%

Question 3

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

Answer 3

53%

Question 4

What are the generic contents of the inter-vertebral foramen

Answer 4

Neural tissue connective tissue vascular tissue lymphatic tissue

Question 5

What is the percent of Neural tissue in the intervertebral foramen

Answer 5

From 8 to 50%

Question 6

What are the characteristics of the artery of Adamkiewicz

Answer 6

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

Question 7

What will the intervertebral veins drain into

Answer 7

The external vertebral venous plexus or Batsons plexus

Question 8

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

Answer 8

They appear to lack valves

Question 9

What size lymphatic vessel lie in the intervertebral foramen

Answer 9

Medium size lymphatics

Question 10

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

Answer 10

Adipose tissue and loose areolar connective tissue

Question 11

What parts of the cervical vertebra will modify the Intervertebral foramen

Answer 11

The lateral groove and uncinate process

Question 12

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

Answer 12

They descend along the spinal cord

Question 13

What determines the length of the intervertebral foramen

Answer 13

The width of the pedicle

Question 14

What is the shape of the lumbar intervertebral foramen

Answer 14

Reniform or earlobe shape

Question 15

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

Answer 15

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

Question 16

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

Answer 16

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

Question 17

What are the largest spinal nerves

Answer 17

L5 and S1 spinal nerves

Question 18

What increases the length of intervertebral foramen at L5

Answer 18

The lumbosacral tunnel

Question 19

What forms the lumbosacral tunnel

Answer 19

The lumbosacral ligament
transverse process of L5
sacral all

Question 20

What condition is the result of encroachment on L5 spinal nerve

Answer 20

The far out syndrome

Question 21

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

Answer 21

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

Question 22

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

Answer 22

A completely osseous boundary exists

Question 23

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

Answer 23

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

Question 24

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

Answer 24

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

Question 25

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

Answer 25

There are two nerves present S5 nerves and CO1 nerve

Question 26

What are some examples of destructive lesions of the vertebral body

Answer 26

Tuberculosis hemangioma osteoporosis

Question 27

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

Answer 27

The joint of luschka in the cervical’s

the costocentral joint in the thoracic

Question 28

What are examples of osteophyte formation that influence to intervertebral foramen

Answer 28

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

Question 29

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

Answer 29

Obesity pregnancy and the use of heavy backpacks

Question 30

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

Answer 30

Back Pack weight should not exceed 10% of individual bodyweight