Calcitonin is produced by which thyroid cell type?

Study for the NBME Histology Test. Access flashcards and multiple choice questions, each with hints and explanations. Prepare effectively for your exam!

Multiple Choice

Calcitonin is produced by which thyroid cell type?

Explanation:
Calcitonin is produced by the parafollicular cells, the C cells, in the thyroid. These cells are located between the thyroid follicles and release calcitonin in response to high blood calcium, helping to lower calcium levels by inhibiting osteoclast-mediated bone resorption. The follicular cells lining the follicles, in contrast, synthesize and secrete thyroid hormones (T3 and T4) and do not produce calcitonin. There isn’t a thyroid cell type called parasympathetic “D” cells, so that option doesn’t apply. In short, calcitonin comes from the parafollicular (C) cells.

Calcitonin is produced by the parafollicular cells, the C cells, in the thyroid. These cells are located between the thyroid follicles and release calcitonin in response to high blood calcium, helping to lower calcium levels by inhibiting osteoclast-mediated bone resorption. The follicular cells lining the follicles, in contrast, synthesize and secrete thyroid hormones (T3 and T4) and do not produce calcitonin. There isn’t a thyroid cell type called parasympathetic “D” cells, so that option doesn’t apply. In short, calcitonin comes from the parafollicular (C) cells.

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