It doesnt, the echange surfaces of the lungs get their very own circulaiton in the pulmonary circulation. The nonexchange surfaces in the lungs (the bronchi etc) are supplied with oxgen and nutrients in the systemic circulation.
The lungs in the fetus are not yet prepared to inflate and undergo respiration therefore blood is shunted away from them through shunts in the heart which then close before birth. Fetal lungs would be damaged without these shunts.
Because the mother's body is providing respiration and hepatic functions for the fetus.
The pulmonary circuit is commonly bypassed in fetal circulation. This is because fresh blood is provided by the mother to the fetus.
The liver is partialy bypassed
It is bypassed because there is no need for the blood to go to the lungs and get "pick up" if the pig is dead.
blood flow from the mother to the fetus
in a fetus blood does not reach the lungs for purification. In a baby blood goes to the lungs for oxygenation.
it is the interface between the fetus and the mother's blood supply it acts like a filter - supplying nutrients to the fetus and disposing of waste material from the fetus to the mother all of this without actually mixing the blood of the fetus and the mother
in a fetus blood does not reach the lungs for purification. In a baby blood goes to the lungs for oxygenation.
in a fetus blood does not reach the lungs for purification. In a baby blood goes to the lungs for oxygenation.
A hemolytic disease of the newborn that is characterized by an increase in circulating red blood cells and by jaundice and that occurs when the system of an Rh-negative mother produces antibodies to an antigen in the blood of an Rh-positive fetus which cross the placenta and destroy fetal red blood cells, called also hemolytic disease of the newborn.
Sometimes fetus is genetically abnormal and dies. Sometimes there is knot in the umbilical cord leading to less blood supply to fetus and then fetus dies. Some times there is partial separation of placenta and blood supply to fetus is hampered. And then fetus dies.
The umbilical cord, which carries oxygenated blood to the fetus and waste away from the fetus. The belly button is where the cord was attached to the developing baby.
Yes, there is no danger to the fetus is the mother is type A and baby is type B