Why is the inner wall of alimentary canal not digested although the digestive enzymes can digest all the
material that make cells?
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Answer:The mucus is a substance secreted along the tube by cells lining its walls . ... It also forms a protective covering which keeps the digestive juices, which are inside the lumen of the canal, from coming into contact with the living cells of the walls. So the inner wall of alimentary canal is not digested.
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Becoz of mucus , mucus protects the inner linning of alimentary canal in stomach so..
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