In the human female,menstruation can be defer | vedclass

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(B) The menstrual cycle is regulated by the levels of hormones like estrogen and progesterone. During the cycle,the withdrawal of these hormones leads

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combination of estrogen and progesterone

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(B) The menstrual cycle is regulated by the levels of hormones like estrogen and progesterone. During the cycle,the withdrawal of these hormones leads to the shedding of the uterine endometrium,which is known as menstruation. By administering synthetic estrogen and progesterone,the hormonal levels in the blood are maintained artificially,which prevents the shedding of the endometrium and thus defers menstruation. This is the principle behind the use of oral contraceptive pills. Therefore,the correct option is $B$.

In the human female,menstruation can be deferred by the administration of

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