Origin: Hepatic Portal Vein is formed by the union of Splenic vein and Superior mesenteric Vein behind the neck of pancreas at L1 vertebral level. Termination: The portal vein terminates by branching into right branch (entering right lobe of liver) and left branch entering (left lobe of liver). Parts: Tributaries: Points to … Continue reading Portal Vein : Tributaries and Portocaval Anastomoses