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  • Why menstruation is not taking place regularly in human female

Screenshot_2019-01-20-10-59-39-17.png Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female Your Answer: maintenance of high concentration of sex hormones in the bloodstream Correct Answer: fertilisation of the ovum Solution: As we discussed in concept Major events of the menstrual cycle - The cycle starts with the menstrual phase, when menstrual flow occurs and it lasts for 3-5 days . The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood vessels which forms liquid that comes out through vagina

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@Drmohamed ashraf

Fertilization of ovum is the most likely root cause wh menstruation is not taking place in regularly cycling human female. fertilized ovum will  continue travvelling down the fallopian tube, taking several days until it reaches the uterus. When it arrives, it attaches itself to the lining of the uterus and continues to grow. 

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Safeer PP

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