Question

Significance of hepatic portal system in circulatory system

Answer 1

The portal venous system is responsible for directing blood from parts of the gastrointestinal tract to the liver.
It also includes venous drainage from the spleen and pancreas.
Many drugs that are absorbed through the GI tract are substantially metabolized by the liver before reaching general circulation.

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Answer 2

The hepatic portal system is the system of veins comprising the hepatic portal vein and its tributaries. It is responsible for directing blood from the region of the gastrointestinal tract between the esophagus and rectum and also includes venous drainage from the supplementary organs such as the spleen and pancreas.