Chapter 15, Problem 10BYGO

Summary Introduction

Introduction:

The autonomic nervous system is divided into two divisions, sympathetic and parasympathetic divisions. Both these systems innervate the visceral organs and have their own effects on the target organs. The sympathetic system operates in the heart, lungs, and smooth muscles and it executes its effect on flight or fight response to create organs excitation. On the contrary, the parasympathetic system innervates the same organ and it effects executes during rest or digest mode. The innervation of an organ by the sympathetic and parasympathetic system is said to be the dual innervation.