What is the function of calcitonin?

Options

A. it increaes calcium level in blood.
B. It decreases calcium level in blood
C. It stimulates steroid synthesi.
D. In increases absorption of water in kidney tubules.

Answer

B

Explanation

Calcitonin is a hormone secreted by the thyroid gland. It lowers the calcium level in the blood by suppressing the release of calcium ions from the bones.