Question

Which of the following is not the function of parathormone (PTH)?

• A. Increases calcium level in blood
• B. Decreases the reabsorption of calcium from the renal tubules
• C. Increases the calcium absorption from GIT
• D. Decreases the movement of calcium to bones.

Answer 1

Answer: (B)

Functions of the parathyroid hormone (PTH) includes:
A. PTH increases the process of bone resorption or dissolution (demineralization) of bone.
B. PTH stimulates the reabsorption of Ca²⁺ by the renal tubules.
C. PTH increases the absorption of Ca²⁺ from digested food.
D. All of the above actions of PTH increase the blood Ca²⁺ levels, thus PTH is a hypercalcemic hormone. PTH and Thyrocalcitonin play a significant role in maintaining the calcium balance in the body.