female sex cell (egg) matures and is located in the ovaries.Its structure and functions are subject to age-old natural process of reproduction of the species.To the egg completely fulfilled its function, it contains the inclusion of proteins and fats that nourish the cells in the initial stage the formation of a living organism.This stage is called a zygote - a tandem of female and male sex cells.Until the moment of attaching to the uterus and receive nutrition from the mother's body is the egg provides power to the future of the fetus.
core of the egg contains 23 sex chromosomes.The remaining twenty-three she gives sperm.
oocyte maturation occurs in the follicle.Interestingly, the first such follicles begin to form at the female child still in the womb about the twelfth week.Over time, their number is rapidly increasing and then decreasing.So, in utero can be up to seven million, but the time of onset of first menstruation them is only three hundred thousand.
woman's body is designed so that the number of follicles does not increase, they only grow old and die.By the age of thirty-five they contained only twenty-five thousand, and the menopause - about a thousand.That is why pregnancy after thirty-five is problematic, since the maturation of oocytes in kind is limited, although it is possible.
Over the entire period of the life of mature eggs capable of fusion with the sperm maturation and further, formed only in the number of four-five hundred pieces.The rest of the egg dies.This is a normal process.After oocyte maturation can be multiple - pregnancy Double and triple considered rare and fortunate and nurtured more children at one time considered to be a record.Thus nature regulates fertility.
Education ovum - a complex multi-level process.In the first stage, the multiplication of follicles - it laid the girl is still in utero.The second stage - the growth of follicles.They grow all the time before puberty begins.Third period - oocyte maturation.During the period of each menstrual cycle in a woman's body matures, one egg, can rarely be two or three.This is called superovulation.In this case, large development opportunity twins or triplets.
Since the reproductive function of the child is put in the womb, her mother has an enormous responsibility for the future of his daughter.If the mother will take alcohol, smoke, use drugs, suffer sexual infections, such burdened may negatively affect sexual health has not yet to be born a girl.
oocyte maturation in the follicle takes place in such a way.Each month, the follicle grows, it appears inside the cavity with fluid and inside the cavity goes bump with the egg.Follicle at maturity rather large - about two centimeters in diameter.When the follicle matures, it bursts and the egg comes out of it.Release of an egg is called ovulation - it "lying in wait" a couple who can not conceive.Since she lives near the egg of the day, the couple who wants children, is to provide as soon as possible meeting the egg and sperm to fertilization has occurred.If in this time of fertilization has not occurred, it would have to wait another month - the period of maturation of the egg.
If the process of meeting the egg and sperm is successful, it will soon make themselves felt signs of fertilization.Vengeance earn hormonal system, the zygote will attach to the uterus, stop menstruation, and pregnancy begins.
Women planning a pregnancy should be aware that the maturation of the egg - the process is very delicate and sensitive.Do not be discouraged if this does not happen in the first months of a stable sex life with a partner.This is not a reason to talk about infertility.There anovulatory cycles, when the egg does not ripen at all - the body is resting.Only after a year of regular sexual life together should be examined by a doctor and, if necessary, to start treatment.
