how mensuration works
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According to present knowledge, ovaries already contain all the egg cells women will have in their lifetime when they are born. These egg cells lie in small pockets called follicles. Once puberty starts, different hormones cause the first follicle to mature and release an egg cell (ovum).
Hormones are substances produced by the body that act as chemical transmitters. They regulate body functions like the menstrual cycle and body temperature. Hormones also trigger ovulation.
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