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==Introduction==

==Introduction==

The ileum is the terminal portion of the [[Small Intestine Overview - Anatomy & Physiology|small intestine]] and continues from the [[Jejunum - Anatomy & Physiology|jejunum]]. It opens into the [[Caecum - Anatomy & Physiology|caecum]] at the ileocaecal orifice. The intestinal epithelium is mainly absorptive, with much less digestion occuring compared to the [[Duodenum - Anatomy & Physiology|duodenum]] and the [[Jejunum - Anatomy & Physiology|jejunum]].

 

The ileum is the terminal portion of the [[Small Intestine Overview - Anatomy & Physiology|small intestine]] and continues from the [[Jejunum - Anatomy & Physiology|jejunum]]. It opens into the [[Caecum - Anatomy & Physiology|caecum]] at the '''ileocaecal orifice'''. The intestinal epithelium is mainly absorptive, with much less digestion occuring compared to the [[Duodenum - Anatomy & Physiology|duodenum]] and the [[Jejunum - Anatomy & Physiology|jejunum]].

==Structure==  

==Structure==  

*The boundary between the ileum and [[Jejunum - Anatomy & Physiology|jejunum]] is arbitrarily distinguished by the position of the ileocaecal fold.  

 

*It is more muscular and firmer than the [[Jejunum - Anatomy & Physiology|jejunum]].

The boundary between the ileum and [[Jejunum - Anatomy & Physiology|jejunum]] is arbitrarily distinguished by the position of the ileocaecal fold. It is more muscular and firmer than the [[Jejunum - Anatomy & Physiology|jejunum]] and it terminates at the '''ileocaecocolic junction'''.

*It terminates at the ileocaecocolic junction.

==Vasculature==

==Vasculature==

*The cranial mesenteric artery supplies blood to the ileum.

 

The cranial mesenteric artery supplies blood to the ileum.  

==Histology==

==Histology==

'''[[Peyer's Patches - Anatomy & Physiology|Peyer's Patches]]''', part of the mucosal associated lymphoid tissue (MALT), are present throughout the ileum and ileocaecal junction. They exist within the lamina propria and contain B and T lymphocytes. B lymphocytes exist in follicles.

*[[Ileum - Anatomy & Physiology - Flashcards|Ileum Flashcards]]

==Links==

==Links==

*[[Intestines, Small and Large - Pathology|Pathology of the Small and Large Intestines]]

*[[Peyer's Patches - Anatomy & Physiology|Peyer's Patches]]

 

*[http://stream2.rvc.ac.uk/Anatomy/bovine/Pot0048.mp4 Pot 48 The Small and Large intestine of the Ruminant]

'''Click here for information on [[Intestines, Small and Large - Pathology|pathology of the Small and Large Intestines]].'''

*[http://stream2.rvc.ac.uk/Anatomy/feline/pot0357.mp4 Pot 357 The Feline Abdomen]

 

'''Click here for information on [[Peyer's Patches - Anatomy & Physiology|Peyer's Patches]].'''

 

 

[http://stream2.rvc.ac.uk/Anatomy/bovine/Pot0048.mp4 Pot 48 The Small and Large intestine of the Ruminant]

 

[http://stream2.rvc.ac.uk/Anatomy/feline/pot0357.mp4 Pot 357 The Feline Abdomen]

[[Category:Small Intestine - Anatomy & Physiology]]

[[Category:Small Intestine - Anatomy & Physiology]]

[[Category:To Do - A&P]]

[[Category:To Do - AimeeHicks]]