Well, normally, in the fully functional adult individual, the blood will go into the right ventricle. But what happens in the lungs is it doesn't actually go or the majority of it doesn't go into the right ventricle. Instead, it passes along the wall of that atria, and it goes into this section here, the left atrium of the heart. Now, the reason for that is because if we examine inside the lungs, inside the alveoli of the lungs, those alveoli are completely filled with the fluid. And so because of that, there will be a high resistance and a high pressure inside the lungs. And because of this high pressure in the lungs, and because the lungs are not functional inside that developing Fetus, this blood will move into the left atrium and not into the left ventricle.