Motor nerves are specialized nerve fibers that transmit signals from the central nervous system to muscles. They play a crucial role in controlling voluntary movements, such as walking or grasping objects. When the brain sends a signal through motor nerves, it triggers muscle contractions, allowing for coordinated actions. These nerves are part of the peripheral nervous system and can be classified into two main types: upper motor neurons, which originate in the brain, and lower motor neurons, which connect to the muscles. Proper functioning of motor nerves is essential for maintaining mobility and overall physical health.