Cell bodies of interneurons can be found in which of the following locations?

Ventral horns of the spinal cord Anterior horns of the spinal cord White matter of the spinal cord Dorsal root ganglia Dorsal horns of the spinal cord

Dorsal horns of the spinal cord

__________ line the central canal of the spinal cord and help to circulate CSF.

ependymal cells

The cell bodies of sensory neurons whose axons travel in spinal nerves are located within the _________.

dorsal root ganglia

________ roots the spinal cord to the coccyx

filum terminale

There are __________ pairs of spinal nerves.

31

A spinal nerve is formed from the union of a dorsal _______ and a ventral _______. What word fills in both blanks?

anterior root has only ______

posterior root has only ____

root

motor axons

sensory axons

distal tapered end of the spinal cord

conus medullaris

the spinal cord runs inferiorly from ______ to ________-

the foramen magnum; L1 or L2

collection of spinal nerve roots extend inferior to spinal cord

cauda equina

extension of pia mater from the conus medullaris anchoring to the posterior surface of the coccyx

filum terminale

what are the two major enlargements of the spinal cord

cervical enlargement and lumbrosacral enlargement

what group of nerves is found near the cervical enlargement of the spine?

brachial plexus

which vertebrae do the cervical and lumbrosacral enlargements cover?

c5-T1 and L1-S3

what protects the spinal cord?

vertebrae, meninges, ligaments, muscles CSF

what is the function of a denticulate ligament and what are they made of?

help anchor the spinal cord out laterally up and down the spinal column. made of pia mater

what are the meningeal spaces of the spinal cord and brain and are they potential or actual

brain spinal cord

epidural potential actual

subdural potential potential

subarachnoid actual actual

which epidural space is continuous between brain and spinal cord?

subarachnoid

where is an epidural administered? why?

in the epidural space between L3 and L4 o4 L4 and L5. The epidural space in the spinal cord is not continuous with the space in the brain. you don't want anesthetic in the brain

where is a spinal tap administered AKA LUMBAR PUNCTURE?

into the subarachnoid space - used to remove CSF to dx meningitis

through which fissure does the anterior spinal artery travel?

the anterior median fissure

what is more deep, the posterior median sulcus or anterior median fissure?

anterior median fissure is deep to posterior median sulcus

where are cell bodies of motor neurons found?

in the ventral horn

where are cell bodies of sensory neurons found?

in the dorsal root ganglia

identify yellow structures

dorsal root ganglion