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 19.5 - Figure 19.19 - Operation of the Heart Valves - Page 730: 1

Answer

The tendinous cords prevent the prolapse of the AV valves during ventricular systole.

Work Step by Step

The tendinous cords hold onto the AV valves and prevent them from inverting and prolapsing.
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