Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 34, Endocrine and Reproductive Systems - Standardized Test Prep - Page 1007: 11

Answer

B

Work Step by Step

Option B (arrow 2) is pointing to the thyroid gland. This gland produces thyroxine, which increases the metabolism in cells.
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