Which hormone released by the anterior pituitary stimulates the thyroid gland?

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Multiple Choice

Which hormone released by the anterior pituitary stimulates the thyroid gland?

Explanation:
Thyroid-stimulating hormone is the signal the anterior pituitary sends to the thyroid gland. It binds to receptors on thyroid follicular cells and drives the production and release of the thyroid hormones T3 and T4, helping regulate metabolism and growth. Its release is controlled by thyrotropin-releasing hormone from the hypothalamus and is inhibited by the negative feedback from circulating T3 and T4. The other hormones listed have different targets—growth hormone affects many tissues like bone and muscle, ACTH stimulates the adrenal cortex, and prolactin promotes lactation—so they do not directly stimulate the thyroid.

Thyroid-stimulating hormone is the signal the anterior pituitary sends to the thyroid gland. It binds to receptors on thyroid follicular cells and drives the production and release of the thyroid hormones T3 and T4, helping regulate metabolism and growth. Its release is controlled by thyrotropin-releasing hormone from the hypothalamus and is inhibited by the negative feedback from circulating T3 and T4. The other hormones listed have different targets—growth hormone affects many tissues like bone and muscle, ACTH stimulates the adrenal cortex, and prolactin promotes lactation—so they do not directly stimulate the thyroid.

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