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The ileum is the terminal portion of the [[Small Intestine - 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.
 
The ileum is the terminal portion of the [[Small Intestine - 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.
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==Structure==
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==Structure==  
*The ileum is the terminal portion of the small intestine.
   
*The boundary between the ileum and [[Jejunum - Anatomy & Physiology|jejunum]] is arbitrarily distinguished by the position of the ileocaecal fold.  
 
*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]].  
 
*It is more muscular and firmer than the [[Jejunum - Anatomy & Physiology|jejunum]].  
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