Which hormone lowers blood calcium by promoting calcium deposition in bone?

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Multiple Choice

Which hormone lowers blood calcium by promoting calcium deposition in bone?

Explanation:
Calcitonin lowers blood calcium by inhibiting osteoclasts, which slows bone resorption and promotes calcium deposition in bone. It’s produced by the thyroid’s parafollicular cells. This action is opposite to parathyroid hormone, which raises blood calcium by increasing bone resorption, increasing kidney calcium reabsorption, and stimulating active vitamin D formation to boost gut calcium absorption. Vitamin D (calcitriol) and its precursor calciferol raise calcium levels rather than lower them. So the hormone that reduces blood calcium by promoting deposition in bone is calcitonin.

Calcitonin lowers blood calcium by inhibiting osteoclasts, which slows bone resorption and promotes calcium deposition in bone. It’s produced by the thyroid’s parafollicular cells. This action is opposite to parathyroid hormone, which raises blood calcium by increasing bone resorption, increasing kidney calcium reabsorption, and stimulating active vitamin D formation to boost gut calcium absorption. Vitamin D (calcitriol) and its precursor calciferol raise calcium levels rather than lower them. So the hormone that reduces blood calcium by promoting deposition in bone is calcitonin.

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