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parathyroid hormone vs. calcitonin

parathyroid hormone

noun

Biochemistry, Physiology.

a polypeptide hormone, produced in the parathyroid glands, that helps regulate the blood levels of calcium and phosphate. PTH

calcitonin

[kal-si-toh-nin] / ˌkæl sɪˈtoʊ nɪn /

Biochemistry.

a polypeptide hormone that participates in the regulation of calcium levels in vertebrates by inhibiting loss of calcium from bone to the blood.