fmerino2 fmerino2
  • 15-06-2017
  • Biology
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Why does menstruation happen?

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digital0dna
digital0dna digital0dna
  • 15-06-2017
The menstrual cycle occurs due to the rise and fall of hormones
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Mathew0574467
Mathew0574467 Mathew0574467
  • 15-06-2017

During that, menstruation stops because the blood came from the uterus protect it and give nourish to the fertilized egg. It usually happen because a sperm cell meet it. When menstruation happens, it develop an egg cell and carried out with the lining of the uterus called the endumetrium because it dies.

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