The thyroid gland is an endocrine gland whose hormone products perform many important functions. Test your basic knowledge of the thyroid gland, its hormone products, and the effect of these hormones on target tissues by taking this simple quiz.
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(1) Within the lumen of the thyroid follicles, the thyroid hormones (T4, T3, and rT3) are:
(2) Triiodothyronine (T3) is the most physiologically active form of the thyroid hormones.
(3) Thyroxine (also known as tetraiodothyronine or T4) is the most physiologically active form of the thyroid hormones.
(4) Reverse triiodothyronine (rT3) is the most physiologically active form of the thyroid hormones.
(5) Reverse triiodothyronine (rT3) is an inactive form of the thyroid hormones.
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Posted: Wednesday, January 21, 2015
Last updated: Tuesday, March 11, 2025
Last updated: Tuesday, March 11, 2025
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