Chapter 15: Peripheral Nervous System-I
Chapter 15: Peripheral Nervous System-I
Author: Mr. Satyendra Garg
Volume: 01
First Online: 31 August 2024
Pages: 207-218
DOI:
Abstract
The peripheral nervous system (PNS) is a critical component of the overall nervous system, extending beyond the central nervous system (CNS) to connect the brain and spinal cord with the rest of the body. It comprises sensory and motor neurons that relay information between the CNS and the limbs, organs, and tissues. The PNS is divided into two main parts: the somatic nervous system, which controls voluntary movements and transmits sensory information, and the autonomic nervous system, which regulates involuntary functions like heart rate, digestion, and respiratory rate. The autonomic nervous system is further divided into the sympathetic and parasympathetic divisions, which work in tandem to maintain homeostasis. By facilitating communication between the CNS and the body, the PNS plays a crucial role in responding to external stimuli and maintaining internal balance, making it essential for both conscious actions and automatic bodily functions.
Keywords: Brain, Spinal cord, Sensory neurons, Motor neurons, Information relay, Somatic nervous system, Voluntary movements