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)

What is the average height of the inter-vertebral foramen

About 13 mm


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



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



What are the generic contents of the inter-vertebral foramen

Neural tissue connective tissue vascular tissue lymphatic tissue


What is the percent of Neural tissue in the intervertebral foramen

From 8 to 50%


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


What will the intervertebral veins drain into

The external vertebral venous plexus or Batsons plexus


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

They appear to lack valves


What size lymphatic vessel lie in the intervertebral foramen

Medium size lymphatics


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

Adipose tissue and loose areolar connective tissue


What parts of the cervical vertebra will modify the Intervertebral foramen

The lateral groove and uncinate process


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


What determines the length of the intervertebral foramen

The width of the pedicle


What is the shape of the lumbar intervertebral foramen

Reniform or earlobe shape


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


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


What are the largest spinal nerves

L5 and S1 spinal nerves


What increases the length of intervertebral foramen at L5

The lumbosacral tunnel


What forms the lumbosacral tunnel

The lumbosacral ligament
transverse process of L5
sacral all


What condition is the result of encroachment on L5 spinal nerve

The far out syndrome


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


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

A completely osseous boundary exists


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


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


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


What are some examples of destructive lesions of the vertebral body

Tuberculosis hemangioma osteoporosis


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


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


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

Obesity pregnancy and the use of heavy backpacks


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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