Menstruation Phase: Menstruation begins, Uterine lining breaks down and is discharged with blood and unfertilised ovum, Repair Phase: Uterine lining thicken, Blood vessels in uterine lining are formed, Fertile Phase: Ovum is released (Ovulation) on the 14th day of menstrual cycle, Fertilisation is likely to occur if sperms are present, Premenstrual Phase: Uterine lining continues to thicken, Implantation of embryo occurs if fertilisation occured, Menstrual cycle will repeat if fertilisation does not occur,

Menstruation Cycle

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