Calcitonin is released by ___________________?
Correct answer: C. Parafollicular cells of thyroid
- A. Granular cells of adrenal gland
- B. Chief cells of thyroid
- C. Parafollicular cells of thyroid
- D. Stratum fasciculata of adrenal gland
Explanation
Calcitonin is secreted by thyroid parafollicular, or C, cells when blood calcium rises. It lowers calcium partly by inhibiting osteoclast-mediated bone resorption.
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