The gray matter of the spinal cord is arranged into regions called
horns
The white matter the spinal cord is arranged into regions called
columns
The ____ matter of the spinal cord consists of primarily nerve cell bodies and unmyelinated axons and dendrites of association and motor neurons.
gray
The nerve plexus that gives rise to the sciatic nerve is the
sacral plexus
The structure of the vertebrae in the cervical region that surrounds the spinal cord is the
vertebral foramen
The __________ are extensions of the Pia mater; they attach laterally to the dura mater to prevent movement of the spinal cord within the spinal canal.
denticulate ligaments
The 2 _____ project from the vertebral body to meet with 2 ____, which continue posterior and medial to form a _______
pedicles, lamina, spinous process
The ______ plexus arises from the ventral rami of C5-C7 and T1.
brachial
The ventral horns contain the nerve cell bodies of the _____ neurons.
motor
The conus medullaris is located at approximately the level of
T12-L1
The _____ nerve is the largest nerve in the body
sciatic
The ______ ligament extends across the ring of C1 to form a sling over the posterior surface of the odontoid process
transverse
There are ___ pairs of spinal nerves that exit the spinal cord.
31
The nerve roots that contains the sensory fibers are the
dorsal nerve roots
The component of the bony vertebra that extends most laterally is the
transverse process
The structures of the vertebral column through which the spinal nerves emerge are the
intervertebral foramina
The canal in the middle of the gray commissure of the spinal cord that is continuous with the 4th ventricle of the brain is termed
central canal
The nervous tissue inferior to the spina cord is called the
cauda equina