Now, this ultimately causes all that blood to be redirected from the right atrium into the right ventricle and eventually into the pulmonary section and then into the lungs. And so we have the closure of that wall, the closure of that one way door that exists within that developing fetus. And this is what we call the Foraymon O Valley, or the closure of the Foraymon ovaly. So within minutes of taking the first breath, the Foraymon O valley is closed. Now, let's move on to the ductus venosis. So what happens to the ductus venosis?