Assertion: portal vein | /r/CapableOf | pass behind the duodenum
Facets:
Source sentences:
text: The portal vein, which measures about 8 centimeters long, begins at the juncture of the superior mesenteric and splenic veins, passes behind the duodenum (the first part of the small intestine), and then divides into right and left branches that supply blood to the right and left lobes of the liver.