what is the duodenum and ileum
Duodenum. The duodenum is the first part of the small intestine. The main role of the duodenum is to complete the first phase of digestion. In this section of the intestine, food from the stomach is mixed with enzymes from the pancreas and bile from the gallbladder. The enzymes and bile help break down food.
The ileum is the third part of the small intestine. It absorbs bile acids, which are returned to the liver to be made into more bile, then stored in the gallbladder for future use in the duodenum.