why does mensuration is occur ?
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The eggs move from the ovary to the fallopian tube and enter the uterus.If while passing through the oviduct it meets a male sperm it immediately fertilises which is known as the Ampulla. But if there is no meeting of the male sperm in the oviduct,there is no use of the egg and so it passes through the uterus and comes out along with all the blood vessels that were getting ready to receive the embryo through the cervix and then the vagina in the form of blood. The menstruation phase last for 3-5 days in which blood is discharged (BLOOD VESSELS). Bleeding caused due to shedding of the uterus lining rupturing the blood vessels.
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sorry it's too late
In each ovulation cycle, an egg is released from the ovary which is transferred to the fallopian tube. Additionally, the uterus prepares itself for a possible pregnancy. The lining of uterus thickens. When no conception happens, the lining of the uterus is shed in fragments; along with the unfertilized egg. These things are released out through the vagina in the form of bleeding; called menstruation.
In each ovulation cycle, an egg is released from the ovary which is transferred to the fallopian tube. Additionally, the uterus prepares itself for a possible pregnancy. The lining of uterus thickens. When no conception happens, the lining of the uterus is shed in fragments; along with the unfertilized egg. These things are released out through the vagina in the form of bleeding; called menstruation.
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