For 10 points, name this endocrine gland located in the neck that can swell into a goiter.
The functional units of this organ contain a glycoprotein-rich substance known as colloid. This organ's namesake isthmus connects the lower portions of its two lobes. A set of four organs that lie behind this larger organ release a hormone that allow osteoclasts to reabsorb bone mineral and thus allows calcium to enter the blood stream. One disease of this organ results in severely bulging eyes. Autoimmune disorders of this gland include Hashimoto's and Graves diseases. Rates of metabolism are affected by the T3 and T4 hormones released by this gland. For 10 points, name this endocrine gland located in the neck that can swell into a goiter.
The functional units of this organ contain a glycoprotein-rich substance known as colloid.
thyroid gland