Biology 2010 Student Edition

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

Chapter 34, Endocrine and Reproductive Systems - Assessment - 34.2 Glands of the Endocrine System - Understand Key Concepts/Think Critically - Page 1004: 7

Answer

d.

Work Step by Step

The parathyroid glands are four glands found on the back portion of the thyroid glands. These glands produce parathyroid hormone, which causes calcium to be released from the bones, allows calcium to be reabsorbed into the blood from the kidneys, and increases the uptake of calcium through the digestive system. All these actions serve to increase the calcium levels in blood.
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