Spinal Cord Structure and Function Flashcards
Middle meninx; web-like
arachnoid mater
Tough, outer meninx
dura mater
Space filled with adipose tissue
epidural space
thin meninx intimate with spinal cord
pia mater
contains cerebrospinal fluid
subarachnoid space
extension of pia mater attaching to dura
denticulate ligaments
contains cell bodies and unmyelinated processes
grey matter
shallow groove on dorsal side of spinal cord
posterior medial sulcus
connects right and left halves of grey matter in spinal cord
gray commissure
sensory branch of spinal nerve entering spinal cord
posterior root ganglion
tapered end of spinal cord
conus medullaris
motor branch of spinal nerve exiting spinal corc
anterior root
contains sensory neuron cell bodies
posterior root ganglion
collection of spinal nerves that arise from inferior end of spinal cord
cauda equina
contains myelinated axons
white matter
contains somatic motor neuron cell bodies
anterior gray horn
space in centre of spinal cord that contains cerebrospinal fluid
central canal
bulge in spinal cord containing cell bodies of motor neurons supplying upper limb
cervical enlargement
wide, deep groove on ventral side of spinal cord
anterior median sulcus
extension of the pia mater that attaches to the coccyx
filam terminale ligaments
bulge in the spinal cord from T9-T12
lumbar enlargement
order of structures through which sensory impulses pass as they enter the spinal cord and travel toward the brain (1-5)
- spinal nerve
- posterior root ganglion
- posterior root
- posterior gray horn
- white column
order of structures through which motor impulses pass as they descend from the brain and leave the spinal cord (1-4)
- white column
- anterior (ventral) gray horn
- anterior (ventral) root
- spinal nerve
