Menstruation is triggered by a small gland located in the base of the brain, called the PITUITARY GLAND. The pituitary gland produces chemicals that act like messengers, traveling in the blood to the ovaries.
Inside the body, the reproductive system begins to function. During each monthly cycle, one of the ovaries releases an egg cell, which is smaller than a grain of salt. It enters the nearby Fallopian tube and travels toward the uterus that has a special lining of blood and tissue, called the ENDOMETRIUM. The lining grows thick as the uterus prepares to receive the egg cell.
If the egg cell is united with a male sperm cell - a process called FERTILIZATION- it will enter the uterus, attach itself to the lining, and begin to develop into a FETUS. The lining supports the growth and development of the fetus. If the egg cell is not fertilized, the lining of the uterus is not needed. Both the lining and egg cell dissolve and flow out of the uterus, through the vagina, and out of the vaginal opening. This discharge is the MENSTRUAL FLOW. When the lining is completely removed from the uterus, the flow stops.
The menstrual flow feels wet and may appear like a thin or thick fluid. It can look pink, or red like blood, or brownish. Often girls report a light discharge the first day, then a heavier flow, then lighter flow at the end. Sometimes girls experience a heavier flow, while for others the flow is quite light. All of these variations are completely normal. Most often, the flow tapers off after the first two or three days. Young girls sometimes worry about growing weak from loss of blood during menstruation. Menstrual flow is not only made up of blood but also fluids and tissue. The facts are the average loss of blood during each period is 1 2/3 tablespoons (25 cc) to 4 tablespoons (60 cc), or only about a quarter of a cup. This is an insignificant amount when considering that there are at least 120 ounces (3,600 cc) of blood in the body, and new blood is constantly being produced. The blood and tissue discharged as menstrual flow are no longer needed by the body. However, if your period lasts more than a week or it is always heavy and contains large clots and you need to wear more than one sanitary napkin or tampon at once, see your doctor. Major blood loss can cause anemia (a shortage of red blood cells), and may be the symptom of another medical problem.
The days when the menstrual flow is leaving the uterus are called the MENSTRUAL PERIOD. Menstruation is the process by which the lining of the uterus is shed periodically as menstrual flow. It usually occurs about once a month, except during pregnancy. During that time the fetus is growing and hormones (chemical substances that control the menstrual cycle) in the body do not allow menstruation. The length of each menstrual period varies from person to person, as does the amount of menstrual flow. Usually a period lasts from three to five days, though variations from two to eight days are common.
2006-06-24 14:06:53
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answer #1
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answered by Jessica 3
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Females get periods when they reach puberty, the time in every person's life when they become an adult physically (but not mentally). That means that you are now able to get pregnant, you will start to develop breasts, and you will grow hair on your pubic area, legs, and armpits. Every single person on earth goes through puberty...even boys (but different things happen to them). The reason girls get periods is because every month an EGG is released from the OVARIES into the UTERUS and waits to be impregnated (the ovaries and uterus are body parts that only females have...if you are unsure about what they are feel free to look them up online). If no sperm cells fertilize that egg (which if they did you would become pregnant) then the egg releases itself from the wall of the uterus and comes out of your body along with the lining of the uterus and blood, creating your period! It's a perfectly natural thing that happens to every single female on earth, so don't worry :o)
2006-06-24 21:15:57
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answer #2
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answered by snpdrgon84 2
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Periods happen due to the dying of our eggs. If the egg is not fertilized in a certain amount of time then it turns to tissue and bleeds out along with the extra lining of the uterus that was created when the egg left the overy. PMS is due to the hormonal changes in our body during this process. Hope my answer helped.
2006-06-24 21:08:09
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answer #3
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answered by Samantha B 1
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When you ovulate an egg will go down your fallopian tube into your uterus, if that egg is not fertilized then it will be washed out along with the lining of your uterus. That's what the blood is and why you sometimes get clots in with it. It's not your actual blood, like from your veins, that's why you don't bleed to death. It's natures way of cleaning you out every month. The pain comes from the contractions in your uterus, which is a muscle, to help push out the blood.
2006-06-25 00:28:34
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answer #4
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answered by guineasomelove 5
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We bleed because when our bodies produce our monthly egg (ovulating) our uterus lining thickens, and fills with blood so that way if the egg is fertilized by sperm it can implant its self in the lining and grow into a baby, if the egg does not implant during the furtile period then the lining has to deteriorate, and prepair for the next cycle, when the lining deteriorates that is when you bleed, because it is getting rid of the stored blood.
2006-06-24 22:05:21
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answer #5
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answered by marishka 5
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Women have eggs. The egg comes down the fallopian tubes about every 28 days. It lands in the uterus. The uterus walls start to thinken with cushy tissue and blood in case the egg is fertilized, because fetuses need this. But, since the egg isn't fertilized all the cushy tissue and blood has to go, so out your vagina it goes. Bye bye!
2006-06-24 21:07:35
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answer #6
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answered by millancad 5
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Your body makes a lining in ur uterus every month so that when you get pregnant the fertilized egg attaches to it. If there is no fertilized egg to attach to the lining then your body rids itself of the lining thus ending in the blood that we women experience as a period. This is something that a sex-ed type class should have taught you.......when i was in the 5th grade we learned about periods
2006-06-24 21:13:32
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answer #7
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answered by NessaR 2
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I found a website that should help you understand.
The reason that your body does this is because you are growing up.
It is how your body sheds the lining in your uterus and gets rid of the eggs during ovulation.
But check this site out it is helpful.
Good luck friend
2006-06-27 01:03:29
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answer #8
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answered by misses e 2
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A period is the result of a woman's not getting pregnant and therefore not needing the blood and fluids that have lined the walls of her uterus in case she did get pregnant and had a baby to nourish.
When she doesn't get pregnant, the lining sloughs off and leaves her body by way of her vagina.
2006-06-24 21:06:21
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answer #9
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answered by LC 6
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I don't know how old you are but most public schools have classes that tell you all about the miracles of life. Your theory is incorrect. This is a perfectly logical question to ask your mom or other adult female guardian. Please ask. There is too much mis-information out there not to hear the truth from a trusted adult.
2006-06-24 21:11:09
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answer #10
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answered by butrcupps 6
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