Calcium plays a very important role in the formation of bones

chemical-coordinatio

#1

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


#2

The secretion of parathyroid hormone (PTH) regulates the concentration of calcium ions, ($c{{a}^{2+}}$).
Parathyroid hormone (PTH) increases the $c{{a}^{2+}}$ levels in the blood, It acts on bones and stimulates the process of bone resorption (dissolution/ demineralisation). It also stimulates reabsorption of $c{{a}^{2+}}$ by the renal tubules and increases $c{{a}^{2+}}$absorption from the digested food. It is, thus, clear that PTH is a hypercalcaemic hormone, i.e., it increases the blood $c{{a}^{2+}}$ levels. Along with TCT, it plays a significant role in calcium balance in the body.