Asked by hetric | 26th Nov, 2009, 11:33: AM

Expert Answer:

In the digestive system, a layer of mucus is present all along the lining of the digestive canal. This mucus layer is vital to protect the cell linings of the canal from digestion by enzymes. In addition it acts as a lubricant for materials which must pass through the canal.


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Answered by  | 29th Nov, 2009, 09:31: AM

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