So because the lungs are filled with fluid, what that means is there is a high resistance inside that fluid, inside the lungs, and that creates a high pressure. Now, we know that blood, as any other fluid, will always flow from a high pressure to a low pressure. So because the lungs have a high pressure, that creates a high pressure in the pulmonary trunk, and it also creates a high pressure in the right ventricle and the right atrium. Now, because of the high pressure in the lungs, the blood inside the right atrium does not actually want to flow into those lungs. And so what happens is once again, we have redirection and shunting taking place. But this time, instead of using this pathogeway called the Doctor's Venosis, we use another passageway known as the Foray Mino valley.