Which statement concerning thyroid hormones is correct?
A) They regulate basal metabolic rate.
B) They are released from the thyroid gland immediately after synthesis.
C) They contain chromium and zinc as structural cofactors.
D) They are tropic.

Question

Quizplus · Accepted Answer

Thyroid hormones, specifically triiodothyronine (T3) and thyroxine (T4), are known to regulate basal metabolic rate.

Answer: B is incorrect as thyroid hormones are first stored in the thyroid gland as precursor molecules and then released into circulation after synthesis.

Answer: C is incorrect as thyroid hormones do not contain chromium or zinc as structural cofactors.

Answer: D is incorrect as tropic hormones are hormones that stimulate the release of other hormones from specific endocrine glands. Thyroid hormones do not stimulate the release of other hormones and are not considered to be tropic hormones.

Which Statement Concerning Thyroid Hormones Is Correct