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Normally menstruation occurs when
  • a)
    Blood levels of FSH fall
  • b)
    Blood levels of estrogen and progesterone decrease
  • c)
    Blood levels of estrogen and progesterone increase
  • d)
    The corpus luteum secretes estrogens
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Normally menstruation occurs whena)Blood levels of FSH fallb)Blood lev...
Yes B is correct
due to decrease in estrogen and progesterone break down of endometrium occurs and blood oozes out
to maintain thickning of endometrium estrogen and progesterone required
progesterone much required
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Community Answer
Normally menstruation occurs whena)Blood levels of FSH fallb)Blood lev...
In the last phase, that is in the luteal phase, th secretion of gonadotropins (FSH, LH) level will be in decreased state. In order to increase their level of secretion, they acts as negative feedback mechanism thereby decreasing the estrogen and progesterone level in the menstrual phase which results in the break down of endometrial lining of uterus. This causes menstruation and the level of FSH and LH will start to increase in the next phase (follicular phase).
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Normally menstruation occurs whena)Blood levels of FSH fallb)Blood levels of estrogen and progesterone decreasec)Blood levels of estrogen and progesterone increased)The corpus luteum secretes estrogensCorrect answer is option 'B'. Can you explain this answer?
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