Question

The spinal nerves are

• A. only sensory
• B. only motor
• C. some sensory and some motor
• D. all are mixed nerves

Answer 1

The correct option is D

all are mixed nerves

The correct option is D

Explanation of the correct option:

1. Spinal nerves are the nerves found in the spinal cord.
2. The spinal cord contains a mixture of both sensory and motor nerves.
3. There is a total of 31 pairs of mixed nerves on each side of the vertebral column.

Explanation of the incorrect options:

Option A:

1. Out of mixed nerves, sensory nerves are afferent neurons that carry signals from the receptors of the body to the central nervous system.
2. But it does consist of motor nerves too.

Option B:

1. Out of mixed nerves, motor neurons are efferent neurons that carry signals from the central nervous system to the effector organ.
2. But it does consist of sensory nerves too.

Option C:

Spinal nerves are only the set of all mixed nerves which perform the function of both sensory and motor neurons.

Final answer: The spinal nerves are all mixed nerves.