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hepatic portal system

anatomy
Also known as: hepatic portal circulation

Quick Summary

The hepatic portal system is a specialized part of the systemic circulatory system that transports blood from the digestive organs to the liver before it returns to the heart. This system includes the portal vein, which carries oxygen-depleted blood from the stomach, intestines, spleen, gallbladder, and pancreas to the liver.12

Within the liver, this blood flows through sinusoids, where it is filtered to remove waste and bacteria. Nutrients are also added to or removed from the blood in the liver for storage. The liver receives blood from both the hepatic artery and the portal vein, with the portal vein supplying the majority of the blood. Blood exits the liver via the hepatic veins and then empties into the inferior vena cava. This unique pathway allows the liver to process substances absorbed from the digestive tract.21

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