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NEET · Biology · STD 12 - 2. human reproduction
Changes in \(GnRH\) pulse frequency in femail is controlled by circulating levels of
- A progesterone only
- B progesterone and inhibin
- C estrogen and progesterone
- D estrogen and inhibin.
Answer & Solution
Correct Answer
(C) estrogen and progesterone
Step-by-step Solution
Detailed explanation
(c) : \(GnRH\) is secreted by the hypothalamus which stimulates the anterior lobe of pituitary gland to secrete luteinising hormone \((LH) \) and \(FSH\). \(FSH \) stimulates the growth of the ovarian follicles and stimulates the formation of estrogens. \(LH\) stimulates the corpus luteum to secrete progesterone. Rising levels of progesterone and estrogen inhibits the release of \(GnRH\), which in turn, inhibits the production of \(FSH\) and \(LH\).
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