And because once again, we have a high pressure inside the lungs and a low pressure inside the order, what happens is that oxygenated blood has a choice to bypass the lungs and go directly into the systemic circulation into the order via this duct known as the ductus arteriosis. So these three ducts basically allow the fetus to create a very quick and efficient way to move the blood within all the organs and tissues of the body. And if it wasn't for these three ducts, the liver and the lungs would basically create a very slow blood flow and that oxnated blood would not be able to get to the brain and the other important organs and tissues of that developing fetus. So this is what takes place within that fetal circulatory system. Now, what happens as soon as that individual, as soon as that fetus is born? What happens during the first breath?