The cross-sectional view of the spinal cord reveals white matter on the
A) inside, gray matter on the outside, and a dorsal motor root.
B) outside, gray matter on the inside, and a ventral motor root.
C) inside, gray matter on the outside, and a dorsal sensory root.
D) outside, gray matter on the inside, and a ventral sensory root.

Question

Quizplus · Accepted Answer

The spinal cord's cross-sectional view shows white matter on the outside, which contains myelinated axons, and gray matter on the inside, which consists of neuron cell bodies, dendrites, and unmyelinated axons. The ventral roots contain motor neurons that send signals from the spinal cord to the muscles.

The Cross-Sectional View of the Spinal Cord Reveals White Matter