Parathyroid hormone(PTH) increases the `Ca^(2+)` in the blood by
a.Bone resorption/dissolution/demineralisation
b.Reabsorption of `Ca^(2+)` by the renal tublules
c.Increasing `Ca^(2+)` absorption from the diggested food

Options

A. a and b
B. b and c
C. a and c
D. a,b and c

Answer

D

Explanation

Parathyroid hormone (PTH) increases the Ca in the blood. PTH acts on bones and stimulates the process of bone reabsorption (dissolution/demineralisation).
..PTH also stimulates reabsorption of Ca by the renal tubules and increases Caabsorption from the digested food. It is, thus, clear that PTH is a hypercalcemic hormone, i.e., it increases the blood Ca levels.