Umbilical cord (umbilical cord) connects the placenta to the unborn child. It extends from the navel of the fruit around the center of the placenta. Average length umbilical cord about 50 inches, and length from 30 to 90 centimeters and considered normal. Wet white cord looks like a twisted cord; inside are two arteries and one of Vienna. Fetal blood is flowing at a speed of about seven miles per hour, keeping the umbilical cord hard, almost like a watering hose full of water. At birth, when your child begins to breathe, his circulation changes, cutting off blood flow to the navel and directing it to light.

After the appointed time - forty-first week of pregnancy and beyond Fruit The average duration of pregnancy is forty weeks, but often is greater. Sometimes the reason is the erroneous identification timing;in other cases the fetus was not yet ready for the birth of forty weeks requires additional time for growth and maturation. Sometimes fruit is ready for birth, but for unexplained reasons, childbirth does not start time. In this case, the fetus may become postmaturity and do not receive adequate nutrition and oxygen from the aging of the placenta. To determine bear a child after the appointed time, an analysis of fetus and placenta function.

Placenta

In many cases of pregnancy after the expiration of the placenta continues support the growth and health of the fetus, and birth is almost always begin before expiration of forty-three weeks. In true postmaturity function of the placenta weaken, the volume of amniotic fluid decreases, and the fruit is depressed. These circumstances really need help in childbirth. Changes occurring in women during pregnancy