What is included in the main part of the placenta?
1. Amniotic
Is the membrane lining the placenta, amniotic constitute part of the placenta of the fetus, is the innermost layer of the placenta, smooth, without blood vessels, nerves and lymph, with a certain flexibility. Amniotic sac contains the amniotic fluid. Amniotic fluid is the fluid surrounding the fetus, in addition to the fetus early in pregnancy to provide nutrition, or second trimester fetal movement, growth, respiratory, digestive cycle and the place of fetal urine.
2. Phyllodes chorionic
Fetal placental chorionic form leafy part of the main part of the placenta. Embryonic development to 13 to 21 days, the main structure of the placenta - hair gradually. About 3 weeks after fertilization, when formation of blood vessels within the villi, and establish a placental circulation.
3. Umbilical cord
Umbilical cord is composed of yolk sac and allantois, usually by two smaller umbilical arteries and one umbilical vein composed of coarse, cord periphery by a layer of soft, jelly wrapped to protect the umbilical cord blood vessels.
Magical function of the placenta
In addition to the placenta play a "material medium of exchange," this role, but also a good barrier. In fact, not a mixture of fetal and maternal blood, is the diffusion through the placenta of fetal nutrient supply, but also to ensure that the fetal effects from external harmful substances.
Therefore, the placenta is the mother and fetus exchange of nutrients and waste places, and the umbilical cord is responsible for the transport of these substances with the metabolism of the "channel", amniotic fluid, fetal buffer protection is to provide the media, the fetus is through these special organs for excretion and absorption The.
Mother's curiosity question
Questions 1 to the fetus really drink his own urine it?
Source of amniotic fluid, initially secreted by the placenta and membranes, then there will be fetal breathing, excretion and secretion of digestive fluid, and manufactured from the urine of fetal kidney.
Although amniotic fluid contains large amounts of fetal urine, but unlike the adult baby's urine contains a lot of waste, and the fetus is only necessary to absorb nutrients, so the mothers do not have to worry about the fetus will drink the real meaning of the "urine" .
Since the fetus will question 2 pee, then he will defecate it?
In the production of a normal fetal meconium before the solution is not, but for various reasons if the phenomenon of fetal distress (ie, hypoxia), the anal sphincter will relax and early discharge of meconium. Production observed in amniotic fluid color, black and green if the show can be learned in the production process had occurred in the anoxic phenomenon.
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.
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.
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