sentence2_structure: The motor system<>consists<>of neurons$$$neurons<>carry<>signals<>to skeletal muscles
sentence1: The somatic nervous system consists of peripheral nerve fibers that send sensory information to the central nervous system and motor nerve fibers that project to skeletal muscle.
sentence2: The motor system consists of neurons that carry signals to skeletal muscles.
question: What system consists of neurons that carry signals to skeletal muscles?