You may not even know that they are pregnant.And yet, the body something happens.It is not always obvious even for the woman herself.But some women intuitively feel the change in his condition.This is not a physical change, and some special state of mind.
Each month during the release of the egg from the ovary to the woman's body is ready to conceive Conception, ovarian cycle, fertilization and genetics baby .This ability comes from the appearance of the first menstruation (menarche) aged 10 to 15 years and ends with the last menstruation, age about 50 years.
When follicles (bubble), in which the egg is matured in the ovary ruptures, the egg is released from the ovary and enters first in the abdomen and then into the fallopian tube (it is actively captured the funnel of the fallopian tube), where he met with the sperm.By this time the lining of the uterus is ready to receive the embryo: the first half of the menstrual cycle under the influence of female hormones and pituit
pregnancy begins at conception, when the egg meets the sperm nuclei of their cells coalesce and form a single fertilized egg cell - the zygote.This happens most often in the fallopian tube where the egg from the ovary which appeared obleplivayut sperm from all sides.Several sperm enter the cytoplasm of the egg, but it is connected to the core nucleus of only one sperm.The fertilized egg immediately begins to divide.
During the first days after fertilization the egg divides into two almost equal magnitude blastomeres, then a day later formed 3 and 4 cells.On day 4 the embryo reaches and 8-12-cell stage.The embryo (fertilized egg) is divided and simultaneously moves through the fallopian tube toward the uterus.
During the entire period from fertilization to the introduction of the egg into the uterine cavity is surrounded by a special envelope, the destruction of which begins only in the uterus.This is one of the mechanisms for preventing the attachment of the embryo to the fallopian tube, that is, the formation of ectopic pregnancy Ectopic pregnancy - Fatal dangerous .Of particular importance in the mechanism of conception is given the proper functioning of the fallopian tubes, as their peristalsis (worm-like movements that contribute to the movement in the right direction), and movement in the same direction as the ciliary epithelium of the mucous membrane of the embryo provide promotion in the right direction.If the fallopian tube obstruction or impaired her physical activity and normal operation of the epithelium, the embryo can remain in the fallopian tube.It is fraught with an ectopic pregnancy, which eventually will result in rupture of the fallopian tube, and internal bleeding - a serious condition that requires emergency surgery.
introduction of a fertilized egg into the uterus
At the end of the first week of pregnancy, the egg gets to the uterus, and is embedded in the mucous membrane, which contains all the necessary nutrients for the development of the embryo.The next stage of division of the embryo occur in the uterus.Most of the embryos introduced in the posterior wall of the uterus, close to the half, which corresponds to the ovary from which the egg out.It is human nature special kind of implantation - interstitial.It is characterized by a quick dip into the interior of the nucleus of the mucous membrane of the uterus by the end of the second day of the beginning of this process, the fertilized egg is fully embedded in the lining of the uterus.
cells are introduced in the uterus of the embryo secrete enzymes that destroy the uterine epithelium, which allows the embryo penetrate deeply into the uterine lining.
process of conception - is a complex and delicate mechanism.As the egg and sperm in the way of each other lurks a lot of obstacles sometimes casual, sometimes resulting from major causes.Therefore, if conception has not occurred within a few menstrual cycles menstrual cycle and its response , it is not an indicator of infertility.To the doctor should contact only after years of unsuccessful attempts to have a baby.
complex relationship the mother's body and fetus
After conception in women occur numerous and complex changes.These physiological changes create the conditions for fetal development Fetal development - week after week .First of all, after fertilization and introducing it in the lining of the uterus in the central nervous system (CNS), women formed a permanent hotbed of excitement, which is linked with the uterus, so the central nervous system constantly receives information about the state of pregnancy and some women intuitively capture it.So gradually formed an unbreakable bond of mother and child, which remains forever.