Which statement is correct for calcitonin?
A) It enhances the effect of parathyroid hormone on bone and kidneys.
B) It is synthesized in the skin in the presence of sunlight.
C) A deficiency of calcitonin produces diabetes insipidus.
D) It is secreted in response to hypercalcemia.

Question

Quizplus · Accepted Answer

Calcitonin is secreted in response to hypercalcemia, which means high levels of calcium in the blood. Calcitonin acts to decrease blood calcium levels by inhibiting osteoclast activity in bone and enhancing calcium excretion by the kidneys. It works in opposition to parathyroid hormone, which acts to increase blood calcium levels. Calcitonin is typically synthesized in the thyroid gland, not the skin, and a deficiency of calcitonin typically does not produce diabetes insipidus.

Which Statement Is Correct for Calcitonin