Question: is it ileum or ilium?
Answer: Ilium vs ileum. ... Of course, the ileum (plural: ilea; adjective: ileal) refers to the distal portion of the small bowel. Terms relating to the ileum include the ileocaecal valve and ileocolic vessels. The ilium (plural: ilia; adjective: iliac) is a bone and part of the innominate bone making up the bony pelvis.