where is parathyroid hormone released from
PTH stands for parathyroid hormone. It is a protein hormone released by the parathyroid gland. The parathyroid glands are located in the neck, near or attached to the back side of the thyroid gland.Parathyroid hormone controls calcium, phosphorus, and vitamin D levels in the blood and bone.Release of PTH is controlled by the level of calcium in the blood.Low blood calcium levels cause increased PTH to be released, while high blood calcium levels block PTH release.t is a protein hormone released by the parathyroid gland. The parathyroid glands are located in the neck, near or attached to the back side of the thyroid gland.