Flashcards in Exam 2 Spinal cord Deck (15):
How many spinal nerves exist?
Cord injury @ T1 level & below
Cord injury @ C8 cord level & above
Dorsal horn (gray matter)
-relayed through posterior horn
Lateral horn (gray matter)
Preganglionic autonomic cell bodies
- found @ T1-L2 & S2- S4 levels
Ventral horn (gray matter)
- axons into periphery
- supply skeletal muscles
Gray matter gross structure also known as:
White matter gross structure is also known as:
A ________ is a longitudinal bundle of white matter.
Central canal inferiorly expands in the conus medullaris as a:
Neurons that originate in the spinal cord or brain stem & extend fibers into the PNS to innervate somatic musculature
Lower Motor Neurons (LMN)
Neurons from higher brain centers that influence the so called lower motor neurons.
Upper motor neurons (UMN)
Corticospinal tract fibers are a good example of:
UMN that are involved with initiation of skilled voluntary movements. In the cord _____ fibers are coricospinals.