ventral (anterior) and lateral horns of gray matter
motor output
dorsal horns of gray matter
(posterior) sensory input
white columns:
gray matter:
dorsal, ventral, lateral horn
lateral horn is only in:
T2-L1
bundle of axons
nerve
nerve have sensory input or motor output?
MOST nerves are mixed
CT covering outside of nerve
Epinerium (outer)
CT membrane surrounding each individual fascicle
perineurium (middle)
surrounds each individual axon
Endoneurium (inner)
inside cell there are bundles of axons
fascicles