Signals from the left primary motor cortex descend through the spinal cord white matter in one of
A) three major tracts.
B) four major tracts.
C) five major tracts.
D) six major tracts.
E) eight major tracts.

Question

Quizplus · Accepted Answer

The left primary motor cortex sends signals through the spinal cord white matter in four major tracts: the corticospinal tract, the corticobulbar tract, the vestibulospinal tract, and the rubrospinal tract.

Signals from the Left Primary Motor Cortex Descend Through the Spinal