What is a characteristic of upper motor neurons?
A) They directly influence to muscles.
B) They influence and modify spinal reflex arcs.
C) Their cell bodies are located in the gray matter of the spinal cord.
D) They extend their dendritic processes out of the CNS.

Question

Quizplus · Accepted Answer

Upper motor neurons do not directly influence muscles, but rather influence and modify spinal reflex arcs. Their cell bodies are located in the cerebral cortex or brainstem, and their axons extend down to the spinal cord. They do not have dendritic processes extending out of the CNS.

What Is a Characteristic of Upper Motor Neurons