NEETZoologyChemical Coordination and Integration
What is the function of parathyroid hormone (PTH)?
Options
- ADecrease the blood calcium levels
- BIncrease the blood calcium levels
- CDecrease the bone resorption
- DIncrease the bone formation
Correct answer
B. Increase the blood calcium levels
Step-by-step solution
Parathyroid hormone (PTH) increases the Ca2+ levels in the blood. PTH acts on bones and stimulates the process of bone resorption (dissolution/ demineralisation). PTH also stimulates reabsorption of Ca2+ by the renal tubules and increases Ca2+ absorption from the digested food. It is, thus, clear tha t PTH is a hypercalcemic hormone, i.e., it increases the blood Ca2+ levels . Along with TCT, it plays a significant role in calcium balance in the body.The thymus gland is a lobular structure located between lungs behi