Nikolas
Created page with "The portal vein drains most of the <abbr>GI</abbr> tract, from the lower parts of the oesophagus to the middle part of the rectum. The portal vein drains into the liver, where nutrient-rich blood is filtered through the hepatic sinusoids before draining into the inferior vena cava. There are multiple points in the body where veins that drain into the portal system and veins that drain into the vena caval system anastomose. They are called porto-caval anastomoses, and ca..."
