Question

Spinal nerves are considered mixed, which means that:

a. they contain both nerves and tracts
b. they contain both gray and white matter
c. they contain both afferent and efferent nerves
d. they use multiple types of neurotransmitters
e. a single nerve arises from multiple segments of the spinal cord

Answer 1

The Correct answer is C .Spinal nerves are considered mixed because they contain both afferent and efferent nerves, transmitting sensory and motor information between the body and the spinal cord.

Step-by-step explanation:

Spinal nerves are considered mixed because they contain both afferent and efferent nerves. Afferent axons come from sensory receptors in various parts of the body, such as the skin, and convey .

sensory information towards the central nervous system. Efferent axons, on the other hand, originate in the central nervous system and travel to muscles or other effector organs to initiate movement.

In the structure of the spinal nerves, sensory neuron cell bodies are grouped in the dorsal root ganglia while motor neuron cell bodies are located in the ventral gray matter of the spinal cord.

These neurons connect with each other and with various parts of the body through the spinal nerves that are part of the peripheral nervous system.

Thus, the correct answer to the question is 'c', indicating that spinal nerves contain both afferent and efferent nerves.