And so we form a partially oxygenated blood. And that's why we use a light purple color for the partially oxygenated blood. So this is essentially the inferior venecaba that eventually connects with a superior venecrava. And when this connection takes place, we have a further mixing of the oxygenated and deoxyted blood to form an even less partially oxygenated blood. And all that blood eventually reaches the right atrium of the heart. So, once again, oxygenated blood from the placentae is carried via the umbilical vein, this entire structure here.