Which organ receives portal venous blood as the main inflow from the portal system?

Study liver anatomy and function with our medical students test. Engage with detailed multiple choice questions, each with hints and explanations. Prepare effectively for your test!

Portal venous blood from the gastrointestinal tract and spleen flows into the liver via the portal vein, making the liver the main recipient of this inflow. The liver receives about 75% of its blood supply from the portal vein (the remainder from the hepatic artery), which allows it to process nutrients, toxins, and metabolites before they enter the systemic circulation. The heart and lungs are part of the systemic and pulmonary circulations, not the portal system, and while the spleen feeds into the portal system, it does not receive portal blood as its main inflow.