The thyroid gland is a butterfly-shaped endocrine gland that is normally located in the lower front of the neck. The thyroid gland is a small gland, normally weighing less than one ounce. It is made up of two halves, called lobes; it lies along the windpipe (trachea) and join together with a narrow band of thyroid tissue, known as the isthmus. The thyroid’s job is to make thyroid hormones, which are secreted into the blood and then carried to every tissue in the body. Thyroid hormone helps the body use energy, stay warm and keep the brain, heart, muscles and other organs working as they should.