Endocrinology/CaHomeostasis/IntroToCaHomeostasis

Calcium Homeostasis

Calcium in the diet is absorbed from the small intestine into the blood (1). Most calcium in the body is stored in the bones. This calcium store can be mobilized leading to the release of calcium into the blood. This is defined as “bone resorption”. This weakens the bone (2). The movement of calcium from the blood to the bone is known as deposition and storage. This strengthens the bone (3). Most calcium is removed from the body through excretion by the kidneys (4).