Question

why inner lining of alimentary Canal is not digested​

Answer 1

Explanation:

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.

Answer 2

Answer:The cell lining the wall of alimentary canal secrete mucus which helps food to slide through the canal without doing any damage.It also forms a protective covering which helps digestive juices from coming in contact with the canal.