👉 The term "medullary" is a medical term that refers to a group of cells located in the neck, particularly in the thyroid gland. These cells are responsible for producing hormones such as thyroid-stimulating hormone (TSH) and the thyroid stimulating hormone-releasing hormone (TRH), which influence metabolism and growth of the thyroid tissue. The medullary glands also produce other important substances, including thyroxine (T4), triiodothyronine (T3), and tr