What causes fetal kidney development

summary

I think many pregnant mothers will be very concerned about this topic. Many parents will want to know the fetal development stage in the womb, what the baby has experienced in the end! With the development of high technology, we can also understand the development of the fetus in the uterus. So in the end, what is the fetal development stage in the uterus? Now I'd like to have a look with you. I hope it can help you.

What causes fetal kidney development

First, about 4 days after fertilization, the sperm and egg that divide into cell mass reach the uterus along the fallopian tube. At the third week, the outer membrane of the cell mass was removed to prepare for implantation. On the fourth week, the embryo cells were firmly implanted into the uterus. Pregnancy three to the first four weeks of pregnancy is called embryo bud period. Embryo bud body 0.5-1 cm like a small hippocampus, to the seventh week, the appearance of the embryo like a baby, with organs.

Second: eight weeks to 19 weeks of the fetus, can distinguish the gender of the fetus, the formation of green fetal stool, after the birth of the discharge, at the same time the skin grew fetal hair, 16 weeks to 19 weeks of fetal movement, can hear the fetal heart, at this time of the fetus with hearing, can hear the sound, can carry out fetal education.

Third: at 20 weeks, the fetus looks like a little old man, but if it is premature, it is difficult for the fetus to survive, because the respiratory system is not perfect. At 27 weeks, although the fetus has breathing and crying, it is very shallow. If you are born, you can only survive for a few hours

matters needing attention

At 28 weeks, the fetus moved freely in the uterus, the nervous system was further improved, and the lung and other viscera were basically developed. At this time, the premature infant, if carefully cared for in the incubator, has been able to survive. At 32 to 35 weeks, the fetus is about 45 cm long, and its weight can be increased by 1000 g in 4 weeks, and its development is basically completed. At this time, the survival rate of premature infants can reach more than 90% if they can be carefully taken care of.