Question

Calcium plays a very important role in the formation of bones. Write on the role of endocrine glands and hormones responsible for maintaining Calcium homeostasis.

Answer 1

Calcium homeostasis is the movement of calcium ions between bodily fluids and cells. Calcium plays an important role in various metabolic processes and is also an integral part of the bones. Hence, relative levels of calcium in body fluids, cells, and bones are highly important. Both thyroid and parathyroid hormones have an important role in calcium homeostasis. 

The Role of Thyrocalcitonin (TCT): This hormone is secreted by the thyroid gland. It reduces the blood Ca²⁺ Level. Thus, it helps in increasing the availability of calcium to the bones. The function of Parathyroid Hormone: This function is controlled by hormones secreted from the parathyroid gland. It increases the blood Ca²⁺ level. Through which the availability of calcium is considered for metabolic functions. It can be said that the roles of TCT and PTH are antagonistic to each other which creates a balance of the effects of each other.