Weegy: When food is digested, it is absorbed into the blood from the small intestine walls. From there the blood is drained into the hepatic portal vein. The hepatic portal vein then goes to the liver. The blood in this vein is very rich in nutrients. [ If it was allowed to drain into the main blood stream directly, these large amounts of nutrients would disrupt the osmotic and chemical balance of the blood and tissues.
In the liver, excess ... (More)