Menstruation
Menstruation
is a monthly shedding of a female's uteral lining; it lasts about 3
to 5 days (average) and contains blood and tissue that exits her
body through the cervix and the vagina.The
menstrual cycle is the recurrent approximately monthly menstruation
which is a hormonal driven cycle.Women
usually have periods until about ages 45 to 55. Read More
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