Question

Which of the following statements is/are true about parathyroid hormone?

• A. It acts on bones and stimulates the process of bone resorption
• B. It stimulates reabsorption of calcium ions by the renal tubules
• C. It increases calcium ions absorption from the digested food.
• D. All of the above

Answer 1

The correct option is D All of the above

Parathyroid hormone is secreted by parathyroid gland. It is responsible for regulating the blood calcium levels. It increases the blood calcium levels whenever it falls below the normal level.
It causes resortion/demineralisation of the bone which results in movement of calcium from bones to blood. It also stimulates the reabsorption of calcium ions by the renal tubules and increases the calcium absorption from the digested food.