Calcitonin

Calcitonin is formed in the C-cells of the thyroid and is a polypeptide. Its release is stimulated by: high calcium concentration in blood and gastrointestinal hormones.

Calcitonin lowers the blood calcium level. It inhibits calcium release from the bone - osteoclasts are slowed down. It also increases calcium excretion via the kidney. In addition, calcitonin lowers the phosphate level in blood by inhibiting the reabsorption of phosphate in the proximal tubule of the kidney. She's a synergistically synergistic Effect on parathormone.

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