NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,992 terms related to cancer and medicine.
- listen (DOO-ah-DEE-num)
The first part of the small intestine. It connects to the stomach. The duodenum helps to further digest food coming from the stomach. It absorbs nutrients (vitamins, minerals, carbohydrates, fats, proteins) and water from food so they can be used by the body.