28: Meninges, Spinal Cord, and Spinal Nerves
Pia mater
3
Gray matter
Posterior horn, Gray commissure, Lateral horn, Anterior horn
Meninges
E
True
There are eight pairs of cervical spinal nerves (T/F)
Arachnoid mater
4
Dura Mater
5
31 pairs
How many pairs of spinal nerves are there?
T12 (minor contributions) and L1-L4
Significant nerves of Plexus: Femoral, orbturator Area served: Inferior abdominopelvic and anterior thigh
C5-C8 and T1
Significant nerves of Plexus: Musculocutaneous, axillary, radial, median, ulnar Area served: Shoulder, arm, forearm, and hand
C1-C5
Significant nerves of Plexus: Phrenic (c3-c5) Area served: neck, shoulder, diaphragm, and portions of head
S4-S5 and Co1
Significant nerves of Plexus: Pudendal Area served: Pelvic Floor
L4-L5 and S1-S4
Significant nerves of Plexus: Sciatic (common fibular and tibial) Area served: Buttock, posterior thigh, leg, and foot
True
The brachial plexus is formed from components of spinal nerves C5-T1 (T/F)
gray commisure
The central canal of the spinal cord is located within the white matter gray commisure epidural space subarachnoid space
sensory neurons
The dorsal root of the spinal nerves contains interneurons motor neurons sensory neurons sensory and motor neurons
Inferior to L1
The inferior end of the adult spinal cord terminates inferior to L1 in the sacrum inferior to L5 in the coccyx
False (white matter)
The major ascending (sensory) and descending (motor) tracts compose the gray matter of the spinal cord (T/F)
dura mater
What is the most superficial membrane of the meninges? subarachnoid space pia mater dura mater arachnoid mater
lateral funiculus
Which of the following is not part of the gray matter of the spinal cord? gray commissure lateral funiculus posterior horn lateral horn