ileum The third section – about 40 cm long – of the small intestine after the duodenum and the jejunum. The ileum is where digestion is completed by enzymes that break down carbohydrates, fats, and proteins. Absorption of food also occurs here. The ileum is separated from the large intestine by the ileocaecal valve. Related category • ANATOMY AND PHYSIOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |