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Questions and Answers
Calcitonin is a peptide hormone secreted by the parafollicular cells in the thyroid gland.
True
The primary function of calcitonin is to increase plasma calcium concentration.
False
Calcitonin plays a more significant role in regulating calcium ion concentration compared to PTH in humans.
False
The synthesis and secretion of calcitonin primarily occur in the follicles of the thyroid gland.
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Calcitonin is a 30-amino acid peptide with a molecular weight of about 3400.
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Calcitonin tends to increase plasma calcium concentration in humans.
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The quantitative role of calcitonin in regulating calcium ion concentration is greater than that of PTH in humans.
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The parafollicular cells that synthesize and secrete calcitonin constitute about 1% of the human thyroid gland.
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Calcitonin is a 32-amino acid peptide with a molecular weight of about 3400.
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Calcitonin is exclusively synthesized and secreted by the follicles of the thyroid gland.
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