Biology Now
Biology Now
1st Edition
ISBN: 9780393918922
Author: Anne Houtman, Megan Scudellari, Cindy Malone, Anu Singh-Cundy
Publisher: W. W. Norton & Company
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Chapter 21, Problem 10TQ
Summary Introduction

A muscular organ which pumps blood by the blood vessels of the circulatory system is called as the heart. The mammalian heart is composed of four compartments. It makes up the two distinct muscular pumps and each composed of the ventricle and atrium. The cardiac cycle is the performance of the human heart from the starting of a single heartbeat to the beginning of the subsequent heartbeat. It consists of two pressures that includes systole and diastole.

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