This week will decide the most important question - to be or not to be
pregnancy? You have ovulated and the egg in the fallopian tube
ready for fertilization.
The time to meet with an enterprising sperm! If
this meeting went well - can congratulate yourself with pregnancy. In
the end of this week will introduce (implantation) of the ovum in
the wall of Your uterus. For some women this is accompanied
microcrustacean, not components, but more or less significant
Begin to appear the first changes in Your immune system - produced Early Pregnancy Factor
(English - EPF). This substance helps the fertilized egg "trick"
Your body (the fact that half of the genes of Your future baby
is of paternal origin, and therefore, proteins of the fetus are
alien to Your body). To prevent conflict between
Your immune cells and cells of the fetus and the need EPF.
Recommendations to the 1st week remain in force.
The egg and sperm met in the fallopian tube. As a result of their merger formed the zygote
the first and most important cell in Your unborn child. All
next 100 000 000 000 000 cells of his body are daughters
zygote! The zygote begins to divide, while traveling through the fallopian
the pipe towards Your uterus. Three days after
fertilization the embryo consists of 32 cells and is similar in form to the berry
mulberries. By the end of this week, the number of cells will increase to 250, form
will resemble a hollow ball with a diameter of 0.1 - 0.2 mm
Now scientists would call Your baby blastocyst.
Blastocyst destroys small areas of the mucous membrane and other
uterine tissue, like "pulling out" for a small "hole", then
comfortable it gets. By the way, in a circle, "mink"
arise microscopic hemorrhages mentioned a little
The implementation process is called implantation. And if
implantation was successful, the development of the embryo reaches the new
the stage is now his "supply" will ensure Your organs and
system, and not modest reserves of nutrients made
In the period from fertilization to implantation of different damaging
exposure can disrupt either all or nothing. In the first case
the embryo dies, the second finds reserves for repair
damage (if in the future there will be no unpleasant surprises, it is not
will remain even traces of these damages).
attack the egg. The spectacle is fantastic! The added synchronously beat
tails, causing the egg to rotate slowly counterclockwise
the arrows. Inside will get only one of them.
DNA of the sperm already inside the egg. Soon merger
paternal and maternal half of the genetic program and will begin
the first cell division.
The first day after conception. The egg has two daughters.
The second day after conception. The division continues.
day - the third day after conception. Blastomeres are already eight. When
artificial insemination (the child "test tube") in the woman's uterus
implanted such embryo.
This blastocyst. Similar to mulberry berry?
The schema. The blastocyst is approaching the wall of the uterus.
The schema. Blastocyst starts to be implemented (be implanted under the mucous membrane.
Implantation is almost finished. Around the embryo usually
areas of hemorrhage, which can lead to microcrustacean.
Sources of illustrations:
The Visible Embryo,
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