Question

Which of the following is responsible for the control of reflex actions?

• A. Spinal Cord
• B. Sensory Nerves
• C. Motor Nerves
• D. Sympathetic Nervous System

Answer 1

The correct option is A

Spinal Cord

The correct option is A.

The explanation for the correct option:

1. The spinal cord enters the vertebral canal through openings in the vertebrae and travels through the foramen magnum, a major opening in the skull, from the base of the brain.
2. It is a part of the central nervous system ( CNS).
3. The spinal cord acts as the main center for reflex actions.
4. The spinal cord is the center for thousands of reflex arcs.
5. Any reaction that happens unconsciously and spontaneously is a reflex, and the nervous system mediates the response.
6. The neural pathway involved in accomplishing reflex activity is known as the reflex arc.

The explanation for the incorrect options:
Option B

Sensory Nerves report information to the brain and it is one-way communication.

Option C

Motor Nerves send signals from CNS to muscles.

Option D

1. A network of nerves known as the sympathetic nervous system aids the body in triggering the "fight-or-flight" response.
2. This system becomes more active when a person is under stress, in danger, or engaged in physical exercise.

Final answer: Spinal cord is responsible for the control of reflex actions.