You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All of the following events occur at or sholy after bih EXCEPT and explain in detail?
When the ductus venosus closes, the bypass of blood around the liver ends, and blood must pass through the liver. The adult remnant of the ductus venosus is the ligamentum venosum. The increased venous return from the lungs increases the blood pressure in the left atrium, and the reduced blood flow from the umbilical vein reduces blood pressure in the right atrium.