The Thyroid Gland and its Function
The thyroid gland makes hormones, which are released into the blood stream. These hormones are chemical messengers that affect other parts of the body.
The gland itself is made up of two lobes, in shape it resembles a cross between a bow tie and a butterfly. One lobe lies on each side of the wind pipe (trachea); the lobes are joined by a ridge of thyroid tissue called the isthmus, a little like the middle of the bow tie or the body of the butterfly. The thyroid sits just below the Adam’s Apple (the thyroid cartilage).
The thyroid gland is regulated by the pituitary gland, which sits at the base of the brain. If the level of thyroid hormone drops, the pituitary gland produces thyroid stimulating hormone, known as TSH. This stimulates the thyroid gland to increase the production of thyroid hormones. If the levels of thyroid hormones are too high, the pituitary attempts to decrease production by shutting off the TSH.request an appointment