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2025-02-18T10:58:23Z

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← Older revision		Revision as of 10:58, 18 February 2025
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			<gallery>
			File:Illu_small_intestine.jpg\|Diagram of the small intestine
			File:Gray1045.png\|Gray's Anatomy illustration of the ileum
			File:Gut_wall.svg\|Diagram of the gut wall
			File:Gobletcell.jpg\|Goblet cell in the ileum
			File:Peyer's_patch_(improved_color).jpg\|Peyer's patch in the ileum
			File:Cross-section_histology_of_small_intestinal_villi_of_the_terminal_ileum.jpg\|Histology of ileum villi
			</gallery>

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2024-02-24T05:13:28Z

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'''Ileum''' is the final section of the [[small intestine]] in most higher vertebrates, including mammals, reptiles, and birds. In humans, the ileum is about 2–4 m long, and follows the [[duodenum]] and [[jejunum]], and is separated from the [[cecum]] by the [[ileocecal valve]] (ICV).

== Anatomy ==

The ileum follows the duodenum and jejunum and is separated from the cecum by the ileocecal valve. In humans, the ileum is about 2–4 m long, and it is usually narrower and thinner-walled than the jejunum. It has a smaller caliber with less vascular arborization and less active transport than the jejunum.

== Function ==

The main function of the ileum is to absorb vitamin B12, bile salts, and whatever products of digestion were not absorbed by the jejunum. The wall itself is made up of folds, each of which has many tiny finger-like projections known as villi, on its surface. In turn, the epithelial cells which line these villi possess even larger numbers of microvilli. Therefore, the ileum has an extremely large surface area both for the adsorption (attachment) of enzyme molecules and for the absorption of products of digestion.

== Clinical significance ==

Diseases of the ileum can result in a number of medical conditions, including [[Crohn's disease]] and [[ileitis]]. These conditions can lead to various symptoms, including abdominal pain, weight loss, and diarrhea. Treatment options vary depending on the specific condition and its severity, but may include dietary changes, medication, or surgery.

== See also ==
* [[Small intestine]]
* [[Duodenum]]
* [[Jejunum]]
* [[Cecum]]
* [[Ileocecal valve]]
* [[Crohn's disease]]
* [[Ileitis]]

[[Category:Anatomy]]
[[Category:Digestive system]]
[[Category:Medical terms]]

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Ileum - Revision history

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Prab: CSV import