2011-02-20

Do you know how to discharge Fetus?part 1

Do you know how to discharge you baby
The most commonly heard phrase during pregnancy, than the "what to eat more nutritious, the baby will grow up well." Although familiar with this truth, but the mothers of the baby belly for how "to eat, drink?" How "pull, Caesar?" Moms I'm afraid this little knowledge, lay to it!
Most have heard of moms and absorption of oxygen metabolism of the fetus is carried out through the umbilical cord, but fetal nutrition and provide an important source of protection - the placenta, but very limited understanding of some of the mother's placenta and umbilical cord will be even function mingled together. Below, we look at mothers with placental what it is now!
The placenta is how to generate it?
Fertilized egg of about 7 to 9 days in the thickening of the endometrium on implantation, implantation began after a series of cell division, differentiation will produce:
Fetal membrane
1. Yolk sac in 2 to 3 weeks to help deliver nutrients to the embryos, 3 to 6 weeks during the manufacture of the original blood cells, 7 weeks into the umbilical cord, and then gradually degraded.
2. Amniotic membrane produces amniotic fluid protect the fetus.
3. Chorionic chorionic below to continue to grow embryonic and uterine wall depth of depression, followed by the formation of the placenta.
4. Allantoic degenerate into the umbilical cord in the last three vessels and median umbilical ligament.
All embryonic layers of fetal tissues, organs, systems originate at the
Embryo development to the 4 to 5 weeks when the original placenta, the placenta has been formed about 8 weeks, the umbilical cord also appeared.
At this time a human embryo has been gradually taking shape, the major organs such as heart, lung and kidney development have been formed, we would call after 9 weeks of pregnancy the embryo as a "fetus."
Placenta will take over after the formation of the original task by the yolk sac to provide nutrients, and begins to secrete progesterone and other hormones, so that the body maintain normal pregnancy. Development of the placenta after 16 weeks to full maturity, pregnancy has begun to enter the stable.

没有评论:

发表评论