Calcium regulation

Calcium regulation in the body involves maintaining balanced calcium levels in the blood and tissues, crucial for functions like muscle contraction, nerve signaling, and blood clotting. The parathyroid glands detect low calcium levels and release parathyroid hormone (PTH), which increases calcium by signaling bones to release stored calcium, increasing absorption from the intestines, and reducing calcium loss through the kidneys. When calcium levels are high, the thyroid gland releases calcitonin, which helps lower calcium by encouraging bones to store it and reducing absorption. This feedback system keeps calcium levels stable, supporting key physiological processes.