this is called an egg or zygote and it will begin to go
to the uterus on a journey that lasts three or four days, beginning to divide into cells that will become a total 16 cells, having an appearance similar to the blackberry fruit. Once in the womb it remains free, there it is You will need another two to three days while you continue your process and until it is implanted in the uterine mucosa, around day 21 or 22 after the last period.
LA FECUNDACIÓN (medical students) While the Fertilization is the union of the sperm with a secondary oocyte, Through the union of gametes, information is also available today on how it has been developed out scientific investigations of biology and its different processes of reproduction. En it, includetwo scientists in this field abarcando from its characteristics and processes of science.According to Jorge Alberto Díaz, in his article “The mechanism of fertilization human “, the biology of the reproduction and developmental biology have used many tools of cell, genetic and molecular biology, better understanding thehuman fertilization: “Fertilization could be defined as the process that culminates in the union of a spermatic nucleus with the nucleus of the ovum, within the cytoplasm activated ovum “For this Molecular Biologist, some mechanisms must occur withinhuman fertilization such as sperm activation; incorporation of sperm towards the cytoplasm of the ovum, which includes the union and membrane fusion plasmaticthe ovum and the espermatozoid, the ametabó ctivationlica of the ovum and the initiation of the first cell cycle; the formation of the pronuclei and nuclear fusion and others like cell divisions.The development of this science of fertilization reached its peak with the scientific British Anne McLaren, consideone of thes biggests academics of biology reproductive plant of the twentieth century, who marked the way for the development of Fertilization In Vitro (FIV) y the subsequent birth of Louise Brown, who in 1978 became the first person to have been gestated through assisted fertilization techniques.The advancement of In Vitro Fertilization (IVF) in recent years occurred with Louise Brown, the first IVF girl conceived from a joint work of scientists Robert Edwards and the doctor Patrick Steptoe. Likewise, in Argentina, the first birth reachedoa from a technique of assisted reproduction occurred in 1986. A year earlier, Colombia saw the first baby born through IVF in the region.The study of this science is has been developing throughout scientific studies that occur in different spaces of scientific journals in the world, such as the magazine Nature, MasSciencie and others that they contribute to the nuevos studies of biology celect, genetic and molecular. According to the journal Nature a woman is between 400 and 450 mensesso rules along of his life, and in each of these menstrual cycles the chances of getting pregnant are 25%.
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