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Where does menstrual blood come from?

1 doctor weighed in
Dr. Richard Bensinger
Ophthalmology

In brief: The uterus

The uterus, which is also termed the womb, is the place in which a fertilized egg implants and a fetus develops.
To accomplish this it grows a blood rich lining, ready for this process each month. If no egg implants, the excess is shed as a discharge through the vagina. This keeps companies that make tampons rich, and is a signal as to whether a woman might be pregnant.

In brief: The uterus

The uterus, which is also termed the womb, is the place in which a fertilized egg implants and a fetus develops.
To accomplish this it grows a blood rich lining, ready for this process each month. If no egg implants, the excess is shed as a discharge through the vagina. This keeps companies that make tampons rich, and is a signal as to whether a woman might be pregnant.
Dr. Richard Bensinger
Dr. Richard Bensinger
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