Explain about Peripheral Nervous System (PNS) briefly.

1. The peripheral nervous system consists of the nerves that branch out from the brain and spinal cord.
2. These nerves form the communication network between the CNS and the body parts.
3. Nerves are bundles of nerve fibers, much like muscles are bundles of muscle fibers.
4. Cranial nerves and spinal nerves extend from the CNS to peripheral organs such as muscles and glands