Human Anatomy (9th Edition)
Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Chapter 21, Problem 10RC
Summary Introduction

To review:

The function of the SA (sinoatrial) node and the difference in its function from the AV (atrioventricular) node.

Introduction:

The SA node of the heart is the natural pacemaker. It sends out electrical impulses from the atrium, which results in its contraction. The contraction of the atrium then leads to the pumping of the blood to the lower chamber of the heart, that is, the ventricle. The AV node has the smaller cells that conduct these impulses to the ventricle via a junction box.

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Describe the function of the SA and AV nodes as they control contraction of the heart.
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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license