Parathyroid hormone causes all of the following except
A) activation of vitamin D.
B) decreased secretion of calcium by the kidney.
C) increase in plasma calcium.
D) inhibition of osteoclasts.

Question

Quizplus · Accepted Answer

Parathyroid hormone (PTH) increases plasma calcium levels by stimulating osteoclasts to break down bone and release calcium, increasing calcium reabsorption in the kidneys, and activating vitamin D, which enhances calcium absorption in the intestines. It does not inhibit osteoclasts; rather, it activates them.

Parathyroid Hormone Causes All of the Following Except