Human Biology, 14 Edition

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

Chapter 16 - Section 16.3 - Thyroid and Parathyroid Glands - Check Your Progress - Page 343: 2

Answer

Calcitonin and parathyroid hormones control the blood calcium level. Calcitonin is released when the amount of blood calcium level is too high. It decreases the amount of calcium by slowing osteoclasts. Parathyroid hormone is released when the amount of calcium is too low and stops when the calcium level becomes normal.

Work Step by Step

Calcitonin and parathyroid hormones control the blood calcium level. Calcitonin is released when the amount of blood calcium level is too high. It decreases the amount of calcium by slowing osteoclasts. Parathyroid hormone is released when the amount of calcium is too low and stops when the calcium level becomes normal.
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