Hepatic portal system | definition of hepatic portal system by Medical dictionary
hepatic portal system
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he·pa·tic por·tal sys·tem
a venous portal system in which the portal vein receives blood via its tributaries from the capillaries of most of the abdominal viscera and drains it into the hepatic sinusoids.
hepatic portal system the part of the BLOOD CIRCULATORY SYSTEM of vertebrates in which blood from the alimentary canal is taken through CAPILLARIES in the liver before transport to the heart. Such a system of veins allows some materials absorbed from the gut to be stored or filtered out during passage through the liver.