Final answer:
The peripheral nervous system (PNS) consists of all the nervous tissue that lies outside of the central nervous system. It connects the central nervous system to the rest of the body and serves as a communication relay for transmitting nerve impulses.
Step-by-step explanation:
The peripheral nervous system (PNS) consists of all the nervous tissue that lies outside of the central nervous system. It is connected to the central nervous system by nerves. The PNS serves as a communication relay between the central nervous system and the rest of the body, transmitting nerve impulses to muscles, organs, and glands.