Calcium level in the blood is regulated by the: ___________?
Correct answer: D. A and B
- A. Thyroid
- B. Parathyroid
- C. Adrenal medulla
- D. A and B
Explanation
Blood calcium is regulated mainly by parathyroid hormone and calcitonin, the latter produced by the thyroid gland. Therefore, both the thyroid and parathyroid are involved.
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