Some of the hormones produced by this gland are derived from tyrosine [TIE-ruh-seen], and another hormone is produced in this gland's parafollicular C cells. This gland is overactive in people with Graves' disease, which can 
Some of the hormones produced by this gland are derived from tyrosine [TIE-ruh-seen], and another hormone is produced in this gland's parafollicular C cells. This gland is overactive in people with Graves' disease, which can lead to bulging eyes. Responsible for secreting calcitonin [kal-sih-TOE-nin], this gland is swollen in people with iodine deficiencies that cause goiter. Name this gland that surrounds the trachea [TRAY-kee-uh] just below the Adam's apple in the neck.
Some of the hormones produced by this gland are derived from tyrosine [TIE-ruh-seen], and another hormone is produced in this gland's parafollicular C cells.
thyroid gland