Which of the following statements concerning the synthesis and storage of thyroid hormones is incorrect?
a. the "iodine pump" of the follicular cells is important for thyroid hormone production.
b. thyroid hormones are formed within a much larger molecule called thyroglobulin.
c. thyroid-hormone synthesis is greatly stimulated by the presence of TSH.
d. a one- to two-hour supply of thyroid hormone is stored within the colloid in the lumen of the follicle.
e. the coupling of two DIT molecules yields thyroxine.
D
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