the spinal cord Flashcards
pia mater
deepest membrane, attatched to the spinal cord
arachnoid mater
middle layer
dura mater
toughest, most superficial membrane
epidural
above the dura mater, filled with adipose, blood tissue, and connective tissue.
subdural
between the dura mater and arachnoid mater. filled with serous fluid
subarachnoid
between arachniod mater and pia mater, filled with CSF
dorsal/ posterior roots
sensory nerves
ventral/ anterior roots
motor nerves
rami communicantes
two small branches connecting to the autonomic nerve system
mixed spinal nerves
31 pairs of nerves. innervating the rest of the body from the spinal cord.
dorsal/posterior ramus
innervates deep muscles and skin in the back
ventral/ anterior ramus
innervates the rest of the body aside from the deep muscles and skin in the back