What is the main function of motor neurons?

What is the main function of motor neurons?

• A. Carry messages from the CNS to muscles and glands
• B. Receive sensory input
• C. Form myelin
• D. Process thoughts

Answer: (A)

Motor neurons are the nerve cells that carry commands from the brain and spinal cord to the muscles and glands, acting as the efferent pathway that initiates action. They transmit signals along their axons to muscle fibers at the neuromuscular junction, causing contraction and movement or triggering glandular activity. Sensory input, by contrast, is carried by sensory (afferent) neurons that bring information from the body to the CNS. Forming myelin isn’t done by the neuron itself but by glial cells (such as oligodendrocytes in the CNS and Schwann cells in the PNS), which insulate the axons. Processing thoughts occurs in brain networks, not within motor neurons.

Motor neurons are the nerve cells that carry commands from the brain and spinal cord to the muscles and glands, acting as the efferent pathway that initiates action. They transmit signals along their axons to muscle fibers at the neuromuscular junction, causing contraction and movement or triggering glandular activity. Sensory input, by contrast, is carried by sensory (afferent) neurons that bring information from the body to the CNS. Forming myelin isn’t done by the neuron itself but by glial cells (such as oligodendrocytes in the CNS and Schwann cells in the PNS), which insulate the axons. Processing thoughts occurs in brain networks, not within motor neurons.