The _______ of the spinal cord is made up of myelinated axons that carry signals in the ascending direction, to the brain, and the descending direction, for cortical control of muscle contraction.
A) dura mater
B) white matter
C) gray matter
D) arachnoid

Question

Quizplus · Accepted Answer

The white matter of the spinal cord is responsible for carrying signals both upward to the brain (in the ascending tracts) and downward for cortical control of muscle contraction (in the descending tracts). The gray matter of the spinal cord contains cell bodies and is responsible for processing sensory and motor information at the spinal level. The dura mater and arachnoid are protective layers surrounding the spinal cord.

The _______ of the Spinal Cord Is Made Up of Myelinated