Changes in GnRH pulse frequency in femail is controlled by circul… - Vidyadip

MCQ

Changes in $GnRH$ pulse frequency in femail is controlled by circulating levels of

A
progesterone only
B
progesterone and inhibin
✓
estrogen and progesterone
D
estrogen and inhibin.

✓

Answer

Correct option: C.

estrogen and progesterone

c
(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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