Motor commands are carried by __________ from the brain along the spinal cord.
A) both anterior and posterior roots
B) ascending tracts
C) spinal nerves
D) cranial nerves
E) descending tracts

Question

Quizplus · Accepted Answer

Motor commands travel from the brain down to the spinal cord through descending tracts, also known as efferent pathways. The other choices are incorrect because anterior and posterior roots carry sensory and motor signals respectively, ascending tracts carry sensory information up to the brain, spinal nerves are a combination of both sensory and motor fibers, and cranial nerves are involved in the nervous system outside of the spinal cord.

Motor Commands Are Carried by __________ from the Brain Along