All the hormones released by the anterior pituitary are tropic hormones except:
Correct answer: B. STH
- A. TSH
- B. STH
- C. ACTH
- D. Gonadotropin hormone
Explanation
Somatotrophic hormone (STH), also known as growth hormone (GH), is the only hormone released by the anterior pituitary that is not primarily a tropic hormone. It directly influences growth and metabolism in tissues rather than causing another gland to release hormones. Other hormones like TSH, ACTH, and gonadotropins are considered tropic because they stimulate other endocrine glands, such as the thyroid, adrenal cortex, and gonads, to produce and release hormones.
This question appeared on the UHS MDCAT 2017 paper, which you can sit online with every answer explained.
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Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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