Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 42 - 42.3 - Concept Check - Page 931: 2


An increased heart rate.

Work Step by Step

An increased heart rate brings more oxygenated blood through the body, providing more oxygen to muscles to facilitate increased use. This is necessary during times of exercise.
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