Process of pregnancy. When a woman having sexual intercourse with a man then it could be that women will get pregnant (occurrence of pregnancy). Pregnancy occurs when the sperm into the uterus of a female egg that has matured. a man on average emit semen as much as 3 cc, 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 running through the uterine cavity,
and arrive at a mature egg in the fallopian tubes that exist across rahim.Pada time of ovulation, the mucus lining in the cervix (neck of the womb) becomes more liquid, so that the sperm easily penetrates into the uterus. Sperm move from the vagina to the end of the funnel-shaped fallopian tubes within 5 minutes. Cells lining the fallopian tube for fertilization and facilitate the formation of the zygote (fertilized egg cell). If she is in a fertile period, or in other words there is a mature egg cell, then there pembuahan.Pada fertilization process, only the head of the sperm to penetrate the egg and united with tail telur.Bagian cell nucleus which is going to release the sperm locomotor self. Fertilized egg cell will undergo hardening exterior. This causes the egg can only be fertilized by a sperm.
Nucleus of the fertilized egg would have cleavage into two parts after 30 hours. 20 hours later the egg nucleus is going back split into four parts. Three to four days after fertilization, the cells will arrive at the uterus.Dalam period of one week after the change, will produce a mass of cells in the form of amalgam ola needle, which is called (blastocyt). In the next process, which is about the next 5 days, the blastocyst will implant into the stick and endometrium.
For two to four weeks of Mining, development, blastocyst obtain nutrients from the endometrium. At this developmental period, will form the placenta. The placenta is an organ shaped discs containing maternal blood vessels (mother) and embryos. This cross the placenta, embryo will get the nutrients from the maternal. Through this lasenta also occur exchange respiratory gases and waste disposal embryo metabolism. Blood flows from the embryo to the placenta through the umbilical cord arterial and central venous return through and past the embryonic heart.
