Laboratory Manual for Anatomy and Physiology, 6e Loose-Leaf Print Companion
Laboratory Manual for Anatomy and Physiology, 6e Loose-Leaf Print Companion
6th Edition
ISBN: 9781119304142
Author: Connie Allen, Valerie Harper
Publisher: WILEY
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Chapter 28, Problem 4HS
Summary Introduction

To describe: When auscultated, which heart sound is the loudest, the lubb or dubb and give the reason.

Introduction: The first heard sound in the heart is lubb, which is denoted as S1. The second heard the sound of the heart is “dubb”, which is denoted as S2. This sound is heard when the semilunar valves close during the ventricular diastole.

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