Anatomy & Physiology: The Unity of Form and Function, 7th Edition

Published by McGraw-Hill Education
ISBN 10: 0073403717
ISBN 13: 978-0-07340-371-7

Chapter 19 - The Circulatory System: The Heart - Study Guide - Testing Your Recall - Page 741: 8

Answer

c. a long absolute refractory period

Work Step by Step

Cardiac muscle does not exhibit tetanus because it has a long absolute refractory period. The long absolute refractory period prevents wave summation and tetanus, which would stop the pumping action of the heart (and be very bad).
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