Anonymous Answered question March 8, 2018
1)It lasts for 3-5 days and extends from 1st and 4th day of the menstrual cycle
2)When the ovum remains unfertilized corpus luteum starts degeneration decreasing the level of progesterone
3)The uterine tissue fails to be maintained
4)The unfertilized ovum along with the ruptured uterine epithelium,50-100ml of blood and some mucus is discharged through the vaginal orifice is called menstrual cycle
Emily Changed status to publish March 10, 2018
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