Final answer:
Motor neurons control muscles and movement in the body. They are part of the sensory-somatic nervous system, transmitting sensory information from the skin, skeletal muscle, and sensory organs to the central nervous system, while sending messages about desired movement from the central nervous system to the muscles to make them contract.
Step-by-step explanation:
Motor neurons control muscles and movement in the body. They are part of the sensory-somatic nervous system, which contains both sensory and motor neurons. Sensory neurons transmit sensory information from the skin, skeletal muscle, and sensory organs to the central nervous system, while motor neurons transmit messages about desired movement from the central nervous system to the muscles to make them contract. Without motor neurons, the body would be unable to process information about its environment and control movement.