How do human fetuses get rid of waste?
The fetus gets rid of waste in two fashions. Contrary to what most people think, the fetus’s blood and the mother’s blood are completely separate during pregnancy. Molecular waste in the fetus’s blood is carried in the fetus’s blood vessels, to the placenta. There, the fetus’s blood vessels come in close proximity to the mother’s blood. The mother’s blood is low in molecular waste where the fetus’s blood is high in concentration of the same. Thus, the wastes diffuse from the fetus’s blood into the mother’s blood. The second way the fetus gets rid of wastes is through its own urinary and digestive system … it pees and poops into the amnionic fluid. However, keep in mind that urine is sterile as long as it is not exposed to bacteria in the environment. Fetal poop is not like that of an adult. It is made up, not of food, but of body cells that are dying and being removed from the body. It is has the appearance of a tar like substance and is not full of harmful bacteria. As a result is (
