Chapter 12.4, Problem 11BYGO

Summary Introduction

Introduction:

A muscle or nerve is difficult to be stimulated for a particular period during action potential is referred as a refractory period. There are two phases in the refractory period—an absolute refractory period and a relative refractory period. The absolute refractory period lasts from the beginning of action potential to its end. During the relative refractory period, potassium channels are open.