<prompt> The sequence of oxygenated blood from the placenta to the fetal hea is ___Umbilical aery - Inferior vena cava - ductus venosus - right atrium - left atriumUmbilical aery - Superior vena cava - right atrium - ductus aeriosus - left atriumUmbilical vein - ductus venosus - inferior vena cava - right atrium - left atriumUmbilical vein - ductus aeriosus - superior vena cava - right atrium - left atrium  <response>: The sequence of oxygenated blood flow from the placenta to the fetal hea is Umbilical vein - ductus venosus - inferior vena - right atrium - left atrium. Ref: Nelson textbook of pediatrics 21st edition pGno: 2345 