Menstration
What’s happening internally to create a period?
Menstruation is a process that happens in the body as part of the menstrual cycle. Here's a simple explanation:
1. Hormone Signals: The brain sends signals to the ovaries to start the menstrual cycle. These signals come from hormones called FSH (follicle-stimulating hormone) and LH (luteinizing hormone).
2. Egg Development: In response to these hormones, the ovaries prepare an egg for release. At the same time, the uterus starts to build up a thick lining of tissue and blood, getting ready in case the egg gets fertilized.
3. Ovulation: About halfway through the cycle, the ovary releases the egg. This is called ovulation.
4. No Fertilization: If the egg is not fertilized, the hormone levels change. This change tells the body that it doesn't need the thick lining in the uterus anymore.
5. Shedding the Lining: The uterus then sheds this lining, and it leaves the body through the vagina. This is what causes the bleeding known as menstruation.
The cycle then starts over again, typically about once a month.
