What is the primary function of motor nerves?

The primary function of motor nerves is to transmit signals from the brain to muscles. This process is essential for enabling movement and coordination within the body. When the brain sends a command to initiate movement, motor nerves carry that signal to the corresponding muscles, prompting them to contract and perform the desired action. This function is crucial for both voluntary movements, such as walking or lifting an object, and involuntary movements, like reflexes.

When considering the other options, sensory information is typically handled by sensory nerves, which relay information from the body's sensory receptors back to the central nervous system. Reflex actions are often mediated by a combination of sensory and motor nerves, but the primary role of motor nerves is not reflexive control but rather deliberate movement. Finally, the processing of information within the central nervous system is a function of the brain and spinal cord, rather than the motor nerves themselves, which focus specifically on executing the commands received from the central nervous system.