One of the thyroid's own hormones, thyrocalcitonin, controls the converse-the transfer of calcium from blood to bone.
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Calcitonin: thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone
Calcitonin is a 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells (also known as C-cells) of the thyroid, and in many other animals in the ultimobranchial body. ...
A hormone, secreted by parenchymal cells, that regulates calcium and phosphate metabolism