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NEET 2017 · BiologyPrevious Year Question

GnRH, a hypothalamic hormone, needed in reproduction, acts on

Answer: (B) Anterior pituitary gland and stimulates secretion of LH and FSH. Answer: (b) Anterior pituitary gland and stimulates secretion of LH and FSH Solution: GnRH (Gonadotrophin releasing hormone) is a hypothalamic releasing hormone that reaches the anterior pituitary through the portal circulation and stimulates its synthesis and release of gonadotrophins, namely LH and FSH.

  1. A.Anterior pituitary gland and stimulates secretion of LH and oxytocin
  2. B.Anterior pituitary gland and stimulates secretion of LH and FSH✓
  3. C.Posterior pituitary gland and stimulates secretion of oxytocin and FSH
  4. D.Posterior pituitary gland and stimulates secretion of LH and relaxin

Correct Answer

(B) Anterior pituitary gland and stimulates secretion of LH and FSH

Solution & Explanation

Answer: (b) Anterior pituitary gland and stimulates secretion of LH and FSH Solution: GnRH (Gonadotrophin releasing hormone) is a hypothalamic releasing hormone that reaches the anterior pituitary through the portal circulation and stimulates its synthesis and release of gonadotrophins, namely LH and FSH. It does not act on the posterior pituitary, and oxytocin/relaxin are not gonadotrophins. NCERT Reference: Chapter 19, Page 240, Line(s) 37-40 — "a hypothalamic hormone called Gonadotrophin releasing hormone (GnRH) stimulates the pituitary synthesis and release of gonadotrophins."

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