<P> The intestinal epithelium is the layer of cells that forms the luminal surface or lining of both the small and large intestine ( colon ) of the gastrointestinal tract . It is composed of simple columnar epithelium . It has two important functions : absorbing helpful substances and providing a barrier against harmful substances . Some diseases and conditions are caused by dysfunction in the intestinal epithelium , and some diseases and conditions cause problems with these cells , which then leads to further complications . </P>
<P> The intestinal epithelium is the layer of cells that forms the luminal surface or lining of both the small and large intestine ( colon ) of the gastrointestinal tract . It is composed of simple columnar epithelium . It has two important functions : absorbing helpful substances and providing a barrier against harmful substances . Some diseases and conditions are caused by dysfunction in the intestinal epithelium , and some diseases and conditions cause problems with these cells , which then leads to further complications . </P>
role of epithelial tissue in the digestive system
role of epithelial tissue in the digestive system
absorbing helpful substances and providing a barrier against harmful substances
absorbing helpful substances and providing a barrier against harmful substances