Question

in a reflex arc, motor neuron cell bodies that will innervate a skeletal muscle have their cell bodies located in the ____.

anterior white column

anterior gray horn

lateral gray horn

posterior gray horn

posterior white column

Explanation:

In a reflex arc, motor neurons that innervate skeletal muscles (somatic motor neurons) have their cell bodies located in the anterior gray horn of the spinal cord. The anterior gray horn contains the cell bodies of motor neurons responsible for sending signals to skeletal muscles. The other options: anterior white column and posterior white column are composed of myelinated axons (tracts), not cell bodies. Lateral gray horn is for autonomic motor neurons (innervating smooth/cardiac muscle/glands), and posterior gray horn contains cell bodies of interneurons that receive sensory input. So the correct answer is the anterior gray horn.

Answer:

B. anterior gray horn