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Chp 14

Spinal Cord & Spinal Meninges

white matter nerve fibers, axons
gray matter neurons
conus medullaris end of spinal cord (usually between LV1 and LV2)
dorsal root ganglia collection of neuronal cell bodies outside of CNS
dorsal root SENSORY; has rootlets
ventral root MOTOR
spinal nerve MIXED; divides into ventral primary ramus and dorsal ramus
these are caudal to the conus medullaris ventral and dorsal roots
all plexuses are made up of... ventral primary rami
innervate all muscles of upper limb and skin of upper ventral primary ramus
cauda equina ventral and dorsal roots caudal to the conus medullaris
epidural space space between dura and bone (vertebra)
contains FAT and VENOUS blood vessels epidural space
this is caudally continuous to the level of sacral vertebra 2 dura mater
beyond SV2 this is continuous as the coccygeal ligament dura mater
subdural space space between dura and arachnoid
this contains cerebral spinal fluid (CSF) subarachnoid space
dermatome area of skin innervated by 1 spinal nerve
shingles follow this pattern dermatomal
the brain does not have this, only found in spine epidural space
filum terminale pia extends to S2 to dura/arachnoid
Created by: afogel