Question

What will happen if the cells of the anterior horn of the spinal cord are destroyed?

• A. Sensory impulses
• B. Commissural impulses
• C. Voluntary motor impulses
• D. Integrating impulses

Answer 1

The correct option is C

Voluntary motor impulses

The correct option is C.

Explanation of the correct option:

1. Peripheral motor nerves carry motor impulses from the spinal cord to voluntary muscles.
2. The destruction of the cells of the anterior horn of the spinal cord will result in the loss of voluntary motor impulses.
3. This is because the cells of the anterior horn (also called the anterior gray column), which is the front column of gray matter in the spinal cord, contain motor neurons that innervate the axillary muscles.

Explanation of the incorrect options:

Option A:

Sensory impulse is a phenomenon of polarization and depolarization through which abnormal activity of fiber is transmitted through a nerve.

Option B:

1. Commissural fibers or transverse fibers are axons that connect the two hemispheres of the brain.
2. Unlike commissural fibers, association fibers connect regions within the same hemisphere of the brain, and projection fibers connect each region to other parts of the brain or the spinal cord.

Option C:

1. The stimuli received by sensory structures are communicated to the nervous system where that information is processed.
2. This is called integration.
3. Stimuli are compared to, or integrated with, other stimuli, memories of past stimuli, or a person's condition at a particular time.

Final Answer: The destruction of the anterior horn cells of the spinal cord will result in the loss of voluntary motor impulses.