Final answer:
The motor nervous system is alternatively known as the somatic nervous system, which controls voluntary movements and relays sensory and motor information to and from the CNS.
Step-by-step explanation:
The motor nervous system is also known as the somatic nervous system. The somatic nervous system is responsible for conscious or voluntary actions and consists of motor neurons and sensory neurons. Motor neurons carry instructions from the central nervous system (CNS) to the muscles, while sensory neurons carry sensory information from the body to the CNS. This system allows us to control our body movements and respond to sensory stimuli.
The somatic nervous system is a component of the peripheral nervous system associated with voluntary control of body movements through the action of skeletal muscles. Motor neurons carry instructions from the central nervous system (CNS) to the muscles and are considered efferent fibers, meaning they "move away from" the CNS. Sensory neurons carry sensory information to the CNS and are known as afferent fibers, which "arrive" at the CNS. This division of the nervous system is also tasked with the relay of sensory information, meaning it guides both motor and sensory signals, and each nerve is comprised of a bundle of these neurons. The somatic nervous system works with the CNS to respond to external stimuli, coordinating voluntary movements and reflex arcs.