I like grapes
上传者:李正华|上传时间:2015-04-15|密次下载
I like grapes
I like grapes
Enter after 8 weeks, the embryo has begun to take shape, but small tail has not completely disappeared, size and shape looks like a grape, sometimes like beating beans movement...Mothers-to-be physiological changesYour belly now looks with the same as before, but your uterus has apparent change.Before your uterus length 5 cm, state like a clenched fist.Now it's not only increased, and become very soft, especially soft uterine isthmus,.Vaginal wall and cervix become soft because of congestion, purplish blue.When the uterus to grow, you will feel some cramps, abdominal sometimes feel the moment of pain.The growth of the fetusEmbryo all sorts of complex organ are now began to grow.The heart and brain development has very complex, eyelids began to appear creases, nose part also gradually stand, teeth and jaw began to development, ears continues to shape, small arms became bent at the elbow.Between the fingers and toes with faint a web interface.Because has not been formed in the bone marrow, temporarily by the liver to produce a large number of red blood cells, until the bone marrow mature later took over his job.From now on, "baby" will be rapid growth, the heart rate is no less the early stages of pregnancy and the speed of the growth of the brain, and showed an obvious outline in a few weeks.To the weekend, 8 "tire baby" will grow to about 3 cm, weight about 4 grams;The placenta and umbilical cord formation;Skin is as thin as paper, visible blood vessels;With the naked eye can distinguish over, body and limbs;Already do kick, leg, hand, move the arms little affectations - although you no feel.
How much do you know about the placenta?What is the placenta?Fertilized egg in the uterine cavity after implantation, and gradually began to form the placenta, embryo villi tissue invasion of endometrial first, and then extends gradually, and then slowly and endometrial tightly integrated, and finally by the amniotic membrane, leafy chorion and decidua combination forms the placenta, fully formed after 12 weeks ago.Placenta flat disc, term about 15 ~ 20 cm in diameter, middle thick, thin edge, weighs about 500 ~ 500 g.The main purpose of the placentaPlacenta adhesion in the uterine wall, set up two sets of maternal and fetal blood circulation, the circulation of blood without feeling, by uterine and placental blood between contexts, to achieve the goal of material exchange between mother and fetus., placenta can be transmitted from the mother, to provide necessary nutrients and oxygen fetal development, through the umbilical cord connected to the fetus, supply the fetus, at the same time can take away carbon dioxide and metabolic waste products of the fetal itself, and let the mother's help.Placental barrier has a protective effect on the fetus, which can prevent harmful substances from the parent or major pathogen invasion
influence the fetus., the placenta can produce all kinds of fetal growth and to get pregnant for several kinds of hormones and enzymes, have important endocrine function.After production, the placenta stripping out under the uterine contractions.Once the placental function is not secure, belly baby can cause lack of oxygen, distress, malnutrition, retardation, mental damage and even death.The structure of the placentaThe placenta by amniotic membrane, leafy chorion and decidua.
Amniotic membrane constitute the placenta fetal part, is the innermost, placenta is only 0.02 ~ 0.02 mm thick, by epithelial cell layer, layer, basement membrane density, fibroblast and sponge layer, a total of five layers of more fine thin film.Leaf chorionic constitute the placenta fetal part is main part of the placenta, placental villi are the main structure, level of villi, secondary villi and tertiary down three stages of development.About three weeks after fertilization, when villi in angiogenesis, establish a fetal placental circulation system.The fetus is obtained by the mother through the placenta blood nutrients needed for growth.At the bottom of the bottom of decidual fetal maternal part, has a very thin layer of decidual plate plate said, mother's uterine spiral artery entering into a matrix, namely to 500 ~ 600 ml per minute velocity into the villi clearance, fetal blood is approved by direct villi capillary arteries and the nap is the exchange of material clearance of blood.
The expert remindsNote: bath time moderation in daily life.Every day when washing bath, in addition to pay attention to the water temperature not exorbitant, and at the same time not too long.Because, so easy to make you tired, dizziness, body cools down, especially sitz bath time is too long can make uterine hyperemia, likely to cause miscarriage.Mixer body is in a position for a long time, to avoid repeated do stressful action, don't ride for a long time, drive, drive, avoid to cause miscarriage.
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