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A period (more technically known as a menstrual cycle) is the result of hormonal changes occurring in your body on a regular basis as your body prepares itself for the possibility of carrying a child.
Every month, your body produces a hormone called estrogen, the purpose of which is to produce an egg from your ovaries and to build a fertile lining in your uterus to support the egg if it is fertilized. After the egg is released from the ovary, it travels into the fallopian tube into the uterus, where if you have had sex, it may be fertilized and attach to the uterine lining, where it will grow into a baby. The space where the egg was becomes a luteal cyst and begins to secrete progesterone, which keeps the lining of the uterus healthy for the growing baby.
If the egg is unfertilized, after a few days the progesterone hormone levels fall and the uterine lining begins to weaken and shed, what you know as your "period."
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Do vampires have periods?
No, vampires do not have periods because they are typically depicted as being dead and not having functioning bodily systems like reproductive organs. The concept of menstruation is specific to living, flesh-and-blood beings.
How did periods occur?
Periods occur as the lining of the uterus sheds in response to hormonal changes in the body. Each month, if an egg is not fertilized, the lining is no longer needed and is expelled through the vagina, resulting in menstruation. This cycle of shedding and renewing the lining of the uterus is what causes periods to occur.
What is the model in of evolution in which periods of rapid change occur is called?
Punctuated equilibrium is the model of evolution in which periods of rapid change occur interspersed with long periods of stability. This theory suggests that species evolve quickly in short bursts of rapid change followed by extended periods of little or no change.
Why do girls get periods while guys get nothing?
Girls get periods as part of their menstrual cycle which prepares the body for pregnancy. When pregnancy doesn't occur, the uterine lining sheds, resulting in menstruation. Guys do not have periods because they do not have a uterus or the reproductive organs necessary for menstruation.
Do guys have periods?
No, guys do not have periods. Menstruation is a biological process that occurs in individuals with female reproductive systems.
How should one count your periods cycle from the starting of the periods or ending of the periods?
The starting AND ending of your periods. :)
Are periods horizontal rows on the periodic table?
rows. the vertical columns are called periods
Do fish have periods?
No - only mammals have periods.
What is the rows in the periodictable called?
periods, they are periods
Periods of the periodic table?
7 periods
Does a koala bear tend to move for short periods of time or long periods?
they dont have periods.
What are characteristics of periods in the periodic table?
Periods have same shells. There are 7 periods in periodic table.
What dinosaur periods where there?
The main dinosaur periods were the Triassic, Jurassic and Cretaceous periods. they were in the mesozoic era. there were other periods before dinosaurs like the carboniferous.
Are periods contagious?
your periods can be influenced by the people around you........ but this is hormonal .......periods are not contagious like a cold or the flu
Do pregnant rabbits have periods?
rabbits don't have periods.
Do turkeys have periods?
Birds do not have periods. They lay eggs.
Do dragons have periods?
No. Dragons are not mammals. Therefore, they do not have periods.
