Where is the amniotic fluid (amniotic fluid) located, what function do they perform? Amniotic fluid fills the fetal bladder in which the child develops. As soon as a fertilized egg enters the uterine cavity and attaches to its walls, shells begin to form around it. They form a closed space, grow together with the fetus.
Inside the fetal bladder is a sterile liquid that provides the embryo with everything necessary. Through this fluid, the body of the child communicates with the body of the mother. What is amniotic fluid made of? Its component is the mother's blood plasma. Already in the third week of the life of the embryo, amniotic fluid can be seen (on ultrasound).
The amniotic fluid is self-renewing every 3 hours, so the embryo is constantly in sterile conditions.