Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 48 - The Respiratory System - Review Questions - Synthesize: 2

Answer

More oxygen can be unloaded from the blood during vigorous exertion because that exertion lowers blood pH and raises the temperature of peripheral tissues, both of which increase unloading.

Work Step by Step

Review the factors which result in more unloading, and consider exercise--you get warmer, and the blood becomes somewhat more acidic. Both of these conditions cause oxygen to more readily diffuse into tissues.
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