Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 38 - Self-Quiz - Page 685: 12


d. chemoreceptors

Work Step by Step

When excess carbon dioxide is produced by active muscles, this gas interacts with the water in blood to produce carbonic acid. The carotid arteries and the aorta have chemoreceptors in their walls that can detect the rising acidity levels. These signals travel to the brain, which directs you to breathe more rapidly and deeper to expel more carbon dioxide.
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