Ileum The ileum is the last section of the small intestine. It is between 2 and 4 meters long in humans. Gastrointestinal systemMouth • Tongue • Salivary gland • Pharynx • Esophagus • Stomach • Pancreas • Gallbladder • Liver • Intestines: Small intestine (Duodenum • Jejunum • Ileum) • Large intestine (Cecum • Colon • Rectum) Anus This short article about biology can be made longer. You can help Wikipedia by adding to it.