What is menstruation? Explain.
Answer
Bleeding from uterus is called menstruation
It occurs every month in woman
It begins from puberty till the age of 45-50 years
Reason for Menstruation
When females reach puberty, they develop ovaries
Ovaries release ovum (egg)
One ovum matures once in a month (28-30 days)
Uterus develops a thick wall to receive fertilised egg
If this ovum is fertilized by egg,it leads to pregnancy
If it is not fertilized,the egg ,thick lining of uterus and blood vessel are shed by body
This leads to bleeding and is called menstruation
