Blood leaves the placenta through a cord which is composed of two two arteries and one vein. H2O is supplied by the vein to the baby. Blood enters the baby through the cord below the liver, then (blood) enters the liver where it's cleansed, filtered and moved to the heart, where it enters at the R. atrium. Starting at the right atrium there are two pathways that the blood can take. 1st, Right atrium to the L. atrium through the interatrial septum which is located at the foramen ovale. Then from here it enters into the left ventricles and through the lungs. 2nd, blood enters the R. atrium to the R. ventricle to the pulmonary SL valve to the pulmonary trunk to the pulmonary artery to the Right and left lungs. At the pulmonary artery it overlaps the aortic arch which here a hole that allows blood to enter and then circulated to the rest of the body.
The mother of my son Kamren had to have a c-section due to low H2O levels. Unfurtunately Kamren has suffered some brain damage. The doctors related his condition to the lack of oxygen supplied by the vein to him. What I've learned has helped me understand that as a baby not getting oxygen can have life long complications so going to the doctors for scheduled checkups is crucial. To this day Kamren is currently dissabled because of his motor skills and he suffers from other complications due to the lack of H2O.
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