The thyroid is gland right beneath your larynx (voice box). The size that your thyroid should be is basically the size of a half dollar. A little bigger than a quarter is how a healthy voice box looks. This is just a general size. The Thyroid gland has two parts called lobes. The thyroid gland produces hormones. The thyroid hormone is made by special cells. The hormones regulate many things in the body .The gland regulates blood pressure, heart rate and the bodies temperature. Your body needs a proper balance of thyroid hormones. If you have too much its bad and to little is also not very good. The thyroid is located tight beneath the lyrnx.