Action of calcitonin is? – Physiology MCQ

Action of calcitonin is?
A. Increases bone resorption
B. Increases calcium and phosphate absorption from GIT
C. Increases renal formation of 1-25 DHCC
D. Increases renal excretion of calcium and phosphate

Correct answer : D. Increases renal excretion of calcium and phosphate

• Parathormone increases bone resorption while calcitonin inhibits it.
• Calcitonin reduces calcium and phosphate absorption from GIT and inhibits the renal formation of 1-25 DHCC.

Ref: Textbook of Physiology, A K Jain, 3rd edition, Volume 2, page 719.