The process of human formation(Fetus)
reproduction system. This mixture of oocyte and sperm called zygot.A zygot move to ovarian tube. In the second step this zygot growth and growth ,zygot bifurcated to
First step, one oocyte and one sperm mix in a female 2 portion and each portion divided by two portions.
Then this structure move to uterus and inoculated in to the endometer. Four layres cover this structure (two chorion-two amniom),this layres are common in monozygot twins; also these are seprated in dizygots twin.In third mounth or 12 weeks of pregnancy, this structure are only a bout 14 gr. Structure of fetus organize in different time .For example :eyes form in 6-8 weeks. After this changes ,at third three mounth the fetus and its indexes (include chorion-amniom and plasma) are wheighted about 13-18kgr.Some of hormons from ovarian centeral nervous system stimulate the delivery. After delivery the fetus called neonate. This process are very wonderful.Finally the main mechanism of these transformations are unknown to us.
Sahar sadeghi
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