Chapter 19.5, Problem 22BYGO

Summary Introduction

Introduction:

Cardiac cycle is a rhythm which is termed by the duration of one heartbeat to the other beat. A typical heartbeat consists of two stages namely diastole and systole. Heart muscles to relax and its chambers to be filled with blood is termed as diastole and this beat makes the “lub” sound. Contraction of heart muscles and ejection of blood by the chambers of the heart termed as systole and this makes the “dub” sound of the heart. The lub and dub sound is the outcome of total isovolumetric contraction and relaxation.