All of the following events occur at or sholy after bih EXCEPT
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.
The ductus aeriosus closes, allowing blood to bypass the liver
The ductus aeriosus closes, ending theshunting of blood from the aoa to the lungs
The foramen ovale closes, ending the shunting of blood from the right to the left atrium
Blood pressure in the left atrium increases