Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 10 - Assess - Page 215: 10

Answer

d.

Work Step by Step

Chemoreceptors in the medulla oblongata, carotid arteries, and aorta detect changes in the pH of the blood. The pH level of the blood is affected by the amount of carbon dioxide in the blood. An increased amount of carbon dioxide in the blood causes an increase in acidity, which is reflected as a decrease in pH.
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