WHAT IS THYROID GLAND? The thyroid gland is a butterfly-shaped endocrine gland in the lower front of the neck. The thyroid's duty is to produce thyroid hormones, which are then secreted into the bloodstream and delivered to all of the body's tissues. Thyroid hormones aid in the efficient use of energy, the maintenance of body temperature, and the proper functioning of the brain, heart, muscles, and other organs. WHAT IS THE FUNCTION OF THE THYROID GLAND?

Thyroxine, usually known as T4 because it contains four iodine atoms, is the most important thyroid hormone secreted by the thyroid gland. T4 is transformed to triiodothyronine (T3) by removing an iodine atom in order to exercise its effects. This occurs mostly in the liver and some T3-acting tissues, such as the brain. Another hormone, thyroid stimulating hormone, secreted in the pituitary gland at the base of the brain, regulates the…