Fetal supply of blood is facilitated by three factors: Oxygen concentration and partial pressure gradient within the feto-maternal circulatory system Fetal hemoglobin (HbF), which has higher affinity (lower P50 of 19mmHg) for oxygen then adult hemoglobin (HbA) with a P50 of 26.8mmHg. This facilitates transfer oxygen transfer from mother to fetus. Bohr effect [More…] See […]