portal circulation

Portal circulation refers to a special blood flow pathway where blood from the stomach, intestines, spleen, and pancreas is directed to the liver through the portal vein. This system allows the liver to process nutrients, toxins, and other substances absorbed from the digestive tract before they enter the general bloodstream. Essentially, it acts as a filter, ensuring harmful substances are detoxified and nutrients are metabolized properly. After the liver processes the blood, it flows into the regular veins and back to the heart, maintaining efficient regulation and detoxification of substances absorbed during digestion.