Assertion: portal vein | /r/HasProperty | formed behind the neck of the pancreas
Facets:
value: by the splenic veins
type: OTHER
Source sentences:
text: The portal vein is about 3 inches long and is formed behind the neck of the pancreas by the union of the superior mesenteric vein and splenic vein.
text: The portal vein is formed behind the neck of the pancreas by the union of the superior mesenteric and the splenic veins.
text: The portal vein is about 5 cm long and is formed behind the neck of the pancreas by the union of the splenic and superior mesenteric veins (SMV)