If the ductus venosus fails to occlude after birth, it remains patent ( open ), and the individual is said to have a patent ductus venosus and thus an intrahepatic portosystemic shunt ( PSS ).
12.
About half of this enters the fetal " ductus venosus " and is carried to the inferior vena cava, while the other half enters the liver proper from the inferior border of the liver.
13.
To the left of the porta, the fold is attached to the bottom of the fossa for the ductus venosus, along which it is carried to the diaphragm, where the two layers separate to embrace the end of the esophagus.
14.
The " ductus arteriosus " normally closes within one or two days of birth, leaving the " ligamentum arteriosum ", while the umbilical vein and " ductus venosus " usually closes within two to five days after birth, leaving, respectively, the liver's " ligamentum teres " and " ligamentum venosus ".
