Q4 of 48 Page 21

Why are menstrual cycles absent during pregnancy.

Once a woman gets pregnant, the placenta starts producing Human Gonadotropin Hormone (hCG). This hormone starts developing Corpus Luteum that secretes a hormone called progesterone which maintains the thickness of the endometrium lining and prevents it from shedding. High level of oestrogen and progesterone during pregnancy results in the absence of menstrual cycle.


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