Discuss the location and function of parathyroid hormone.
There are four parathyroid glands present on the back side of thyroid glands, two on each of the lobes of the thyroid gland. The parathyroid glands secrete parathyroid hormone (PTH), a peptide hormone. Parathyroid hormone (PTH) increases the Ca2+ levels in the blood. PTH acts on bones and stimulates the process of bone resorption (dissolution/ demineralization. PTH also stimulates reabsorption of Ca2+ by the renal tubules and increases Ca2+ absorption from the digested food.
