31. A human being usually has four parathyroid glands located on the back surface of the thyroid in the neck. 32. MEN I patients have tumors in their pituitary gland and parathyroid glands , in addition to tumors of the pancreas. 33. When the parathyroid gland is overactive, the blood calcium level increases, which can affect the heart and other organs. 34. Low levels of calcium stimulates the release of parathyroid hormone ( PTH ) from chief cells of the parathyroid gland . 35. In the parathyroid gland , the calcium-sensing receptor controls calcium homeostasis by regulating the release of parathyroid hormone ( PTH ). 36. All these activities are controlled by the parathyroid gland , a small gland buried within the tissue of the thyroid gland. 37. Because they didn't want to disrupt the larynx's blood supply, they also transplanted the nearby thyroid and parathyroid glands , too. 38. The parathyroid glands produce parathyroid hormone ( PTH ), a hormone needed to maintain adequate amounts of calcium in the blood. 39. Gustaf Retzius and Eugene Gley compounded his research, the latter credited with the discovery of the function of the parathyroid glands . 40. When the parathyroid gland is overactive, the blood calcium level increases, which can affect the heart and other organs of the body.
