Parathyroid Hormone Does All of the Following Except

Question

Parathyroid hormone does all of the following except
A) stimulate osteoclast activity.
B) inhibit osteoblast activity.
C) build up bone.
D) stimulate the formation and secretion of calcitriol at the kidneys.
E) enhance the reabsorption of calcium at the kidneys.

Accepted Answer

Parathyroid hormone does not build up bone. Instead, it stimulates the breakdown of bone by osteoclasts to release calcium into the bloodstream. It also enhances calcium reabsorption at the kidneys and stimulates the formation of calcitriol, which is the active form of vitamin D.