What do motor (efferent) neurons primarily do?

Motor, or efferent, neurons play a crucial role in the nervous system by transmitting nerve impulses away from the central nervous system (CNS) toward effector organs, such as muscles or glands. This action directly influences bodily movements and functions. When the CNS, which includes the brain and spinal cord, decides to initiate a movement or response, motor neurons carry that command to the relevant muscles or glands, resulting in contraction or secretion, respectively.

Understanding the function of motor neurons is essential as they serve as the communication link that enables the body to respond to stimuli and execute functions based on the CNS's interpretation of sensory information. This highlights their primary role in motor control, distinguishing them from sensory neurons, which are responsible for transmitting information toward the CNS.