alleryWhich thyroid hormone regulates blood calcium by decreasing it?
AThyrotropin
BThyrocalcitonin
CThyroglobulin
DThyroperoxidase
Answer & Solution
Correct answer: B. Thyrocalcitonin
1. The thyroid makes more than the two iodinated hormones.
2. One of its hormones acts on calcium rather than metabolism.
3. Thyrocalcitonin regulates calcium levels in our blood by decreasing it.
4. So the answer is thyrocalcitonin.
_Source: syllabus Biology, Ch 19 'Chemical Coordination and Integration'_
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