Intervertebral Foramen

Question 1

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

Answer 1

40%

Question 2

What are the generic contents of the intervertebral Foramen?

Answer 2

Neural tissue, connective tissue, vascular tissue, lymphatic tissue

Question 3

What is the name of the largest medullary feeder artery?

Answer 3

The artery of Adamkiewicz or the arteria radicalis manga anterior

Question 4

What are the characteristics of the artery of Adamkiewicz?

Answer 4

It is a left side, anterior medullary feeder artery, located in the T9/T10 intervertebral Foramen, and the primary vascular supply to the lumbar enlargement

Question 5

What is the most likely region of the thoracic spine for herniation?

Answer 5

Below T8

Question 6

What ligaments lies next to the anterior internal vertebral venous plexus?

Answer 6

The posterior longitudinal ligament

Question 7

What venous plexus lies next to the posterior longitudinal ligament?

Answer 7

The anterior internal vertebral venous plexus

Question 8

What venous plexus lies next to the ligamentum flavum?

Answer 8

The posterior internal vertebral venous plexus

Question 9

What will the intervertebral veins drain into?

Answer 9

The external vertebral venous plexus or Batson’s plexus

Question 10

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

Answer 10

They appear to lack veins

Question 11

What size lymphatic vessels lie in the intervertebral Foramen?

Answer 11

Medium sized lymphatics

Question 12

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

Answer 12

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

Question 13

What are the specific attachment sites for a vertical spinal nerve?

Answer 13

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

Question 14

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

Answer 14

The costocentral joint

Question 15

What increases the length of the intervertebral Foramen at L5?

Answer 15

The lumbosacral tunnel

Question 16

What forms the lumbosacral tunnel?

Answer 16

The lumbosacral ligament, transverse process of L5 and sacral ala

Question 17

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

Answer 17

The far out syndrome

Question 18

What is unique about the relationship of spinal nerve to intervertebral Foramen at S5-Co1?

Answer 18

There are two nerves present, S5 nerve and Co1 nerve

Question 19

What are some examples of destructive lesions of the vertebral body?

Answer 19

Tuberculosis, hemangiomas, osteoporosis

Question 20

What are examples of acquired alterations of the spinal curves IDed in class?

Answer 20

Obesity, pregnancy and the use of heavy backpacks

Question 21

What is the recommended weight is a backpack compared to individual with for the developing spine?

Answer 21

Backpack weight should not exceed 10% individual body weight

Question 22

What are medullary feeder arteries?

Answer 22

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

Question 23

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

Answer 23

The far out syndrome

Question 24

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

Answer 24

The intervertebral disc above. The intervertebral Foramen is usually the source of damage

Question 25

What is unusual about the sacral intervertebral Foramen compared to others?

Answer 25

A completely osseous boundary exits

Question 26

What may reduce the impact of IVD loss of integrity intervertebral Foramen in the cervical and thoracic spine?

Answer 26

The joint of Luschka in the cervicals, the costocentral joint in the thoracics

Question 27

What are the examples of osteophyte formation that influence the intervertebral Foramen?

Answer 27

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