Ileum
Videos
The ileum is the final section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds. In fish, the divisions of the small intestine are not as clear and the terms p
Small intestine
Goblet cells in the wall of an ileum vili. At its sides, enterocytes are visible over a core of lamina propria.
Cross section of ileum with a Peyer's patch circled.
Cross-section histology of intestinal villi of the human terminal ileum.
Jejunum
Videos
The jejunum is the second part of the small intestine in humans and most higher vertebrates, including mammals, reptiles, and birds. Its lining is specialized for the absorption by enterocytes of smal
Ileum
…may be used instead of ileum. Its main function is to absorb vitamin B12, bile salts, and whatever products of digestion that were not absorbed by the jejunum. The ileum follows the duodenum and jejunum and is separated from the cecum by the ileocecal valve (ICV). In humans, the ileum is about 2–4 m long, and…
Transmission electron microscope (TEM) image of human jejunum
TEM image of mouse jejunum (14,000-fold magnification)
Dog jejunum (magnified 100-fold)