Calcitonin: Hormone Secreted by the Thyroid Gland
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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.

<p>False</p> Signup and view all the answers

Calcitonin is a 30-amino acid peptide with a molecular weight of about 3400.

<p>False</p> Signup and view all the answers

Calcitonin tends to increase plasma calcium concentration in humans.

<p>False</p> Signup and view all the answers

The quantitative role of calcitonin in regulating calcium ion concentration is greater than that of PTH in humans.

<p>False</p> Signup and view all the answers

The parafollicular cells that synthesize and secrete calcitonin constitute about 1% of the human thyroid gland.

<p>False</p> Signup and view all the answers

Calcitonin is a 32-amino acid peptide with a molecular weight of about 3400.

<p>True</p> Signup and view all the answers

Calcitonin is exclusively synthesized and secreted by the follicles of the thyroid gland.

<p>False</p> Signup and view all the answers

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