Shared Flashcard Set

Details

Spine, Spinal Cord, and Spinal Nerves
Principle learning objectives
11
Anatomy
Graduate
10/21/2009

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Cards

Term
Where are the roots of spinal nerves?
Definition
within the spine
Term
Where are the rami?
Definition
outside the spine
Term
Where do motor nerve fibers from lower motor neurons exit?
Definition
via the anterior roots
Term
Where are the cell bodies of the LMN?
Definition
Within the anterior grey horns
Term
Where do sensory nerve fibers enter?
Definition
posterior roots
Term
Where do the cells bodies of the sensory neurons lie?
Definition
within the posterior root ganglia
Term
What is the conus medullaris?
Definition
the lower end the spinal cord (lower border of the first lumbar vertebra)
Term
What is the cauda equina?
Definition
the spinal nerve roots that extend beyond the conus medullaris (lower border of the 1st Lumbar)
Term
Where is the lower end of the subarachnoid space?
Definition
lower border of the body of the second sacral vertebra
Term
Where is the highest point of the iliac crest?
Definition
at the level of the spinous process of the 4th lumbar vertebra
Term
Why is the highest point of the iliac crest important?
Definition
it is use to locate the space between the 4th and 5th lumbar bodies - a needle can be inserted to draw CSF
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