Answered

Parathyroid hormone (PTH) does which of the following?

A. Allows the kidneys to retain Ca²+
B. Increases Ca²+ excretion by the intestine
C. Tends to inhibit osteoclasts
D. Stimulates kidneys to excrete Ca²+
E. Decreases blood Ca²+ levels



Answer :

GinnyAnswer

Final answer:

Parathyroid hormone (PTH) regulates calcium levels by releasing calcium from bones and increasing reabsorption in the kidneys.


Explanation:

Parathyroid hormone (PTH) is a peptide hormone that plays a crucial role in calcium homeostasis. When blood calcium levels are low, PTH stimulates the release of calcium from bones by stimulating osteoclasts and increases reabsorption of calcium in the kidneys to maintain optimal calcium levels. PTH also indirectly stimulates the production of calcitriol, which enhances dietary calcium absorption in the intestines.


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