Chapter 40.2, Problem 1SB

Summary Introduction

To review:

The division of autonomic nervous system predominates in two different situations: (a) An individual is hiking on a trail and suddenly a bear appears in your path and (b) It is a hot and sunny day, finding a tree you sit under.

Introduction:

The ANS (autonomic nervous system) is the part of the human’s nervous system that play a critical role in the control of the involuntary actions of the body. Nerves, smooth muscles, cardiac muscles, endocrine glands, and some exocrine glands constitute the autonomic nervous system. It further, has two divisions, namely, parasympathetic and sympathetic, which have opposite actions controlling the involuntary actions of the body in opposite situation.