Hormone, parathormone
Hormone made by the parathyroid gland (behind the thyroid gland in the neck).
Parathormone (pronounced para-thor-mone) is critical to calcium and phosphorus balance.
Deficiency of parathormone results in abnormally low calcium in the blood (hypocalcemia).
Also call parathyrin.</P> <IMG height=475 alt='Illustration of the Parathyroid Glands' src='http://images.medicinenet.com/images/illustrations/parathyroid_glands.jpg' width=402 border=0>