Which of the combinations below is INCORRECT?[Fill in the blank]

Question

BlackTom AI · Accepted Answer

Question restated: Which of the combinations below is INCORRECT? [Fill in the blank]
Answer options:
 a. Calcitonin - thyroid gland
 b. Androgen - testes
 c. Aldoesterone - adrenal glands
 d. Thyrotropin releasing hormone – anterior pituitary gland
 e. Oxytocin – posterior pituitary gland

Option-by-option analysis:
- Option a: Calcitonin - thyroid gland
This pairing is generally correct because calcitonin is a hormone produced by the thyroid gland, primarily involved in reducing blood calcium levels by inhibiting bone resorption. The association between calcitonin and the thyroid gland is widely accepted in physiology, so this option aligns with standard anatomy and physiology.

- Option b: Androgen - testes
Androgens (such as testosterone) are produced mainly by the testes in males. This is a correct functional pairing since the testes are the primary source of androgens, which drive male secondary sexual characteristics and other functions. No mismatch here.

- Option c: Aldoesterone - adrenal glands
Aldosterone (spelled here as Aldoesterone) is a mineralocorticoid produced by the adrenal cortex. The adrenal glands are the correct anatomical source. This option reflects a valid hormone-gland relationship, aside from the occasional misspelling.

- Option d: Thyrotropin releasing hormone – anterior pituitary gland
Here lies the common trap. Thyrotropin releasing hormone (TRH) is released by the hypothalamus, not by the anterior pituitary. TRH acts on the anterior pituitary to stimulate the release of thyroid-stimulating hormone (TSH). The statement incorrectly assigns the hypothalamic source to the anterior pituitary, creating an incorrect pairing.

- Option e: Oxytocin – posterior pituitary gland
Oxytocin is indeed associated with the posterior pituitary gland, where it is stored and released into the bloodstream. This is a correct hormone-gland pairing.

Synthesis and takeaway:
- The only incorrect pairing among the options is option d because it misattributes the source of thyrotropin releasing hormone. TRH is produced by the hypothalamus and acts on the anterior pituitary to trigger TSH release.
- All other pairings correspond to well-established hormone-gland relationships, with minor spelling issues in option c that do not alter the underlying biology.

If you’re unsure about TRH’s source, remember the hypothalamic-pituitary axis pattern: hypothalamic releasing hormones (like TRH) project to and regulate the anterior pituitary, which then releases stimulating hormones (like TSH) that act on peripheral glands.

Which of the combinations below is INCORRECT?[Fill in the blank]

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