Advice 1: How fast is the conception

Conception is the fusion of sperm and Mature eggs. Mandatory condition is ovulating, since during this period the egg gets into the fallopian tube, where the fusion of the sperm.

Timing of conception



There are two points of view about the time of the creation of a new human life. Some believe that it begins at conception, according to another version it is believed that this is the first day of the cycle, in which there was fertilization of the egg. During the menstrual cycle ovulation occurs once, so the fertilization of an egg maybe once during 25-30 days. The egg can only exist the day after ovulation, if conception has not occurred, the woman can become pregnant only in the next cycle. When injected into the uterus of the sperms remain alive for about 7 days. Therefore, sexual intercourse a week before ovulation can lead to conception.

Ovulation may take about two weeks before the end of the menstrual cycle. To pinpoint the day of conception, need to know exactly when it will happen. The exact moment is impossible to calculate, it is only possible to roughly calculate the ovulation day, if you follow previous cycles and do the test. If the sexual act occurred in the period of ovulation or a few hours after the time of conception will depend on the speed of the sperm. On average, it will be 50 minutes. Consequently, during ovulation, fertilization occurs about an hour after ejaculation. Thus, conception is possible during the period from one hour up to a week after intercourse.

Artificial insemination



In the cases of female or male infertility to conceive a child with artificial insemination. This methodology is based on the fact that the contact of eggs with sperm for the purpose of conceiving is in vitro. Before egg retrieval, the woman will undergo a course of treatment that stimulate the maturation of several follicles. Then the analysis supporting their development. After this is done the needling, in which under ultrasound guidance through the vagina into the abdominal cavity the needle is injected, it gets the contents of the follicles. The sperm is taken from semen sample.

Eggs and sperm with the optimum degree of maturity are placed in a nutrient medium promoting spontaneous conception. The next day they are studied under a microscope to identify fertilized eggs. Then, several embryos are implanted in a uterus to have one implanted. Typically, three embryos are transferred and the rest frozen. The procedure is performed, when the embryo turns from two to six days. The success of conception in the test tube reaches 30-35%, this technique is time-consuming and laborious.

Advice 2: How fast is the conception of a child

Conception is called a biological process, which begins with pregnancy. In the result of conception in the womb of a woman occurs, the embryo from which formed a full-fledged, viable human individual.
In ordinary consciousness the conception is often equated with sexual intercourse. Given that sexual intercourse takes a few minutes conceiving, too, think "matter of minutes". This representation does not correspond to reality: conception is a relatively long process, not coincident in time with sexual intercourse, resulting in conception is.

The conception includes three stages: fertilization, cleavage and implantation.

Fertilization



The main content of the stage of fertilization is "the meeting of sperm with the egg. It occurs about 2 hours after getting semen in the vagina – it is the time need sperm to get to the part of the fallopian tube, which is adjacent to the ovary, there is a ripe egg.

When the sperm penetrates the egg, its shell is destroyed, there is a zygote – special cell with two pronuclei (nuclei, have a single chromosome set). The process of rapprochement of the pronuclei, culminating in their merger, took over the day – 26-30 hours.

Crushing


The maintenance phase of fragmentation – the division of a zygote and the subsequent division of the daughter cells and both daughter cells are smaller parent in size. Cells, obtained at this stage, are called blastomeres.

The crushing stage takes a few days. "Significant event" occurs on the 4th day, when the number of blastomeres reaches 16 cells, which until now did not differ from each other for the first time differenziata – some cells form the embryoblast (the prototype of the embryo) and the other outer layer, which on the 5th day forms a spherical shell. So there blastocyte that will evolve for another few days.

Implantation


While there is fragmentation, blastocyte remains in place: the reduction of fallopian tubes gradually move it toward the uterus. It is no exaggeration to say that this path is difficult and dangerous: to survive it is capable of only one embryo out of ten! That's why women sometimes there are delay of menstruation, which should not be pregnancy.

To the uterus the embryo will reach the 11 th day after fertilization. Now it needs to attach to the inner lining of the uterus – the endometrium is called implantation. To make this happen, the shell of the embryo must break through, then he will have fingerlike appendages. This process takes about 40 hours.

Thus, the total duration of conception in humans – from the beginning of fertilization to complete implantation of the embryo in the uterus is about 12.5-13 days, almost two weeks.
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