Calcitonin is a hormone produced by the thyroid gland that helps regulate calcium levels in the blood by lowering them when they are high. It acts by inhibiting the activity of osteoclasts, cells that break down bone, thereby reducing the release of calcium from bones.
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Specialized cells that break down bone tissue, releasing calcium into the bloodstream.
Calcium homeostasis: The process by which the body maintains stable levels of calcium in the blood and tissues, crucial for proper functioning of muscles, nerves, and bone health