Zoology - Body Fluids and Circulation Question with Solution | TestHub

Hepatic portal system is the system of veins comprising the hepatic portal vein and its tributaries. The portal venous system is responsible for directing blood from parts of the gastrointestinal tract to the liver. Substances absorbed in the small intestine travel first to the liver for processing before continuing to the heart. Not all of the gastrointestinal tract is part of this system. The system extends from about the lower portion of the esophagus to the upper part of the anal canal. It also includes venous drainage from the spleen and pancreas.