And this blood vessel is known as dambilical vein. So just like any vein always carries blood to the heart, umbilical vein always carries blood to that heart. Now, as dambilical vein shown in red, actually carries the oxygenated and nutrient filled blood to the heart, eventually it comes in close proximity with the liver, and there is a tiny blood vessel that goes into that liver. Now, the problem with the liver in the fetus is the liver is underdeveloped. It is not fully functional. And what that means is we should not waste that oxygen and nutrients onto the liver, because the liver doesn't yet function the same way does in the adult individual.