Which neurons carry outgoing information from the central nervous system to the muscles and glands?

• A. Sensory neurons
• B. Connector neurons
• C. Motor neurons
• D. Interneurons

Answer: (C)

The main idea is that signals leaving the central nervous system to act on the body are carried by motor neurons. These neurons form the efferent pathway, with cell bodies in the brain or spinal cord and axons that extend out to skeletal muscles or to glands. When they fire, they trigger muscle contractions or regulate glandular activity, producing movement or physiological responses. Sensory neurons, by contrast, bring information from the body into the CNS, not out to effectors. Interneurons (often called association or connector neurons) work inside the CNS to process and relay signals between neurons, not to muscles or glands. So the outgoing, body-wide commands come from motor neurons.