2. a continuous tube through the mammalian body where different processes related to mammalian nutrition take place

3. taking up of absorbed food molecules (nutrients) by body cells

4. the breaking down of large food molecules into smaller ones by chemical processes

5. the breaking down of excess amino acids into urea and other substances inside the body

6. a way to indicate the number and type of teeth in the left or right half of the upper and lower jaws of an animal

7. the type, number and arrangement of the teeth of an animal

8. the breaking down of food into molecules small enough to be absorbed into the body

9. removing undigested and unwanted food materials from the alimentary canal

10. taking food into the alimentary canal

11. the rhythmic contraction and relaxation of the muscles of the gut wall to move food along the alimentary canal

12. the breaking down of food by physical actions

13. a complex reflex activity which pushes chewed food from the mouth into the oesophagus

14. damage to a tooth by the chemical actions of bacteria in plaque

15. small, finger-like projection on the inner surface of the small intestine of mammals for increasing the surface area for absorption

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