Physiology Quiz: Thyroid Gland and Thyroid Hormones - Part 8

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Home > Daily Quiz > Thyroid Gland and Thyroid Hormones - Part 8

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Physiology Quiz -
Thyroid Gland and Thyroid Hormones - Part 8

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.

(1) Within the lumen of the thyroid follicles, the thyroid hormones (T₄, T₃, and rT₃) are:

	(A) Freely dissolved in the colloid
	(B) Bound to thyroglobulin through non-covalent interactions
	(C) Exist as modified and iodinated tyrosine residues of thyroglobulin, still incorporated in the backbone of thyroglobulin

(2) Triiodothyronine (T₃) is the most physiologically active form of the thyroid hormones.

	True
	False

(3) Thyroxine (also known as tetraiodothyronine or T₄) is the most physiologically active form of the thyroid hormones.

	True
	False

(4) Reverse triiodothyronine (rT₃) is the most physiologically active form of the thyroid hormones.

	True
	False

(5) Reverse triiodothyronine (rT₃) is an inactive form of the thyroid hormones.

	True
	False

Checking your answers...

Posted: Wednesday, January 21, 2015