Chapter 15, Problem 11CP

Summary Introduction

To review:

The examples of antagonistic effects of the parasympathetic and sympathetic divisions of the autonomic nervous system (ANS).

Introduction:

An antagonist can be defined as a substance that binds and blocks the receptors. The blocking of the receptor prevents the neurotransmitter or hormone to bind and activate the receptor. Therefore, even in the presence of a hormone or a neurotransmitter, an antagonist can prevent the activation of the receptor.