The occurrence of the process of Pregnancy

The occurrence of the pregnancy process. When a woman having sex with a man then maybe the woman will become pregnant (The occurrence of pregnancy). Pregnancy occurs when a sperm cell into the womb of a woman's egg that has matured. a man on average spend as much as 3 cc of semen, and every 1 cc of normal semen will contain about 100 million to 120 million pieces of sperm cells. Once the semen is emitted (ejaculation) into the base of the genital tract wife, millions of sperm cells will be run through the uterine cavity,fought to achieve a mature egg in the fallopian tubes that exist across the uterus. At the time of ovulation, the mucus in the cervix (neck of womb) to be more liquid, so that the sperm readily penetrate into the womb. Sperm move from the vagina to the ends of the fallopian tube funnel-shaped in 5 minutes. Cells lining the fallopian tube for fertilization and facilitate the formation of a zygote (fertilized egg cell). If she is in the fertile period, or in other words there is a mature egg cell, then there pembuahan.Pada process of fertilization, only the head of the sperm penetrates the egg and unite with the cell nucleus telur.Bagian tail which is a tool to release sperm themselves. The fertilized egg will harden on the outside. This causes the egg can only be fertilized by a sperm.Core of the fertilized egg cell will experience a division into two parts after 30 hours. 20 hours later the egg cell nucleus will be re-split into four sections. Three to four days after fertilization, the cells will arrive at the uterus. In  the period of one week after the change, will produce a mass of cells ola bulb shaped needle, which is called (blastocyt). In the next process, which is about 5 the next day, blastocysts will attach and implant into the endometrium.For two to four weeks of development, blastocysts obtain nutrients from the endometrium. At this developmental period, will form the placenta. The placenta is a disc-shaped organs that contain maternal blood vessels (mother) and embryos. This crosses the placenta, the embryo will get the nutrients from the maternal. Through the placenta is also an exchange of respiratory gases and metabolic disposal of embryos. Blood flow to the placenta from the embryo through the umbilical cord arterial and central venous return and pass through the heart of the embryo.