Biology 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078024269
ISBN 13: 978-0-07802-426-9

Chapter 40 - Hormones and Endocrine Systems - Assess - Page 769: 12

Answer

b

Work Step by Step

Option a is incorrect. Parathyroid hormone, or PTH, causes the kidneys to reabsorb more calcium ions. Option c is incorrect. PTH causes more calcium ions to be absorbed by the intestines. Option d is incorrect; therefore, option b is correct. PTH takes calcium ions out of bone tissue and releases them into the bloodstream.
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