the thyroid gland makes thyroid hormone, which controls your metabolism. While the thyroid gland produces three different hormones that affect many different bodily functions, the parathyroid glands product the parathyroid hormone, which controls the levels of calcium, phosphorus, and magnesium in the blood stream. The thyroid gland and parathyroid glands are a group of endocrine glands located in the base of the neck. Each gland is about the size of a grain of rice (weighs approximately 30 milligrams and is 3-4 millimeters in diameter). The parathyroid glands are four tiny glands, located in the neck, that control the body’s calcium levels. These glands play a vital role in maintaining the body’s homeostasis by producing hormones that regulate the body’s metabolism and free calcium levels. They together produce a substance called parathyroid hormone which controls the amount of calcium within the blood in a very tight range between 8.5 and 10.5. The function of the parathyroid glands. if this gland doesn't make enough (a condition called hypothyroidism), everything happens more slowly. The parathyroids produce a hormone called parathyroid hormone (PTH). These glands operate very similarly to the thyroid gland, but on a somewhat smaller scale. Parathyroid glands consist of four tiny glands located behind the thyroid gland.
parathyroid glands are four small glands in the neck that play a role in bone development..