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 - Section 19.4 - Figure 19.14 - Action Potential of a Ventricular Cardiocyte - Page 724: 1

Answer

To prevent wave summation and tetanus.

Work Step by Step

The benefit of having a long absolute refractory period in cardiac muscle is to prevent wave summation and tetanus. Wave summation and tetanus would stop the pumping action of the heart.
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