What is the ileum?
It is called the ileum. Gray's Anatomy (1918) describes it as the final segment of the small intestine.
What it is
- The final segment of the small intestine.
- Thinner and narrower than the jejunum.
- Absorbs vitamin B12, bile salts, and remaining nutrients.
Where it is
- Between the jejunum and the cecum.
- Occupies the lower right of the abdomen and the pelvis.
- Joins the cecum at the ileocecal valve.
Source:
Last verified: 2026-07-18
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