Question

white matter is found in all of the following locations except the______
a) corpus callosum
b) outer portion of the spinal cord
c) corticospinal tracts
d) cerebral cortex

Explanation:

White matter consists of myelinated axons. The corpus callosum (A) is white matter. The outer portion of the spinal cord (B) is white matter. Corticospinal tracts (C) are white matter. The cerebral cortex (D) is gray matter (unmyelinated cell bodies and dendrites).

Answer:

D. cerebral cortex