MICROANATOMY

Detailed explanation-1: -Calcitonin is secreted by the parafollicular cells of the thyroid gland. This hormone opposes the action of the parathyroid glands by reducing the calcium level in the blood. If blood calcium becomes too high, calcitonin is secreted until calcium ion levels decrease to normal.

Detailed explanation-2: -The main hormones produced by the thyroid gland are thyroxine or tetraiodothyronine (T4) and triiodothyronine (T3).

Detailed explanation-3: -If the body needs more hormones, T3 and T4 can be released from the proteins in the blood and do their job. The third hormone produced by the thyroid gland is called calcitonin. Calcitonin is made by C-cells. It is involved in calcium and bone metabolism.

Detailed explanation-4: -calcitonin, also called thyrocalcitonin, a protein hormone synthesized and secreted in humans and other mammals primarily by parafollicular cells (C cells) in the thyroid gland.