Now, of course, a tiny amount of that blood will still get into the right ventricle of the heart. So a portion of that blood does, in fact, move into the right ventricle of the heart. And actually that's important because when that heart of that fetus is developing, we have to be able to develop the wall of those ventricles. And so a tiny portion of the blood goes into the ventricle, meaning this right ventricle can actually now contract. And as it contracts, it develops the wall of the ventricle. So that partially oxygenated blood goes into the left of the right ventricle, the right ventricle contracts, and then it sends that partially oxygenated blood into the pulmonary trunk.