Calcium regulation
Parathyroid hormone regulates the levels of calcium in the blood. to the parathyroid glands.
This diagram shows the parathyroid glands in the neck sending parathyroid hormone into the bloodstream. This activates calcium reabsorption and vitamin D hydroxylation in the kidneys, calcium absorption from the intestines, and calcium reabsorption from bones. This increases calcium levels in the blood, which provides feedback to the parathyroid glands.
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