Vit. B12 is absorbed in the
One molecule of IF can combine with 2 molecules of B12. This IF-B12 complex is attached with specific receptors on mucosal cells. The whole IF-B12 complex is internalized . It may be noted that B12 is absorbed from the ileum. Ref: DM Vasudevan, page no: 404
Stomach
Duodenum
Lower jejunum
Terminal ileum
nutrition and digestion