The neurons that carry messages from the spinal cord to the muscles and glands are the

• A. afferent neurons.
• B. efferent neurons.
• C. interneurons.
• D. sensory neurons.

Answer: (B)

Verified step by step guidance

1. Understand the role of different types of neurons: Afferent neurons, also known as sensory neurons, carry information from sensory receptors to the central nervous system. Efferent neurons, also known as motor neurons, carry information from the central nervous system to muscles and glands. Interneurons connect neurons within the central nervous system.
2. Identify the function described in the problem: The problem states that the neurons carry messages from the spinal cord to the muscles and glands.
3. Match the function to the correct type of neuron: Since the function involves carrying messages from the central nervous system (spinal cord) to muscles and glands, this is the role of efferent neurons.
4. Review the options provided: The options are afferent neurons, efferent neurons, interneurons, and sensory neurons.
5. Select the correct answer based on the function: The correct answer is efferent neurons, as they are responsible for transmitting signals from the spinal cord to muscles and glands.