alimentary canal - the long tube which runs from the mouth to the anus and contains muscles that contract and relax to make food move long, chewing - the process in digestion which we can control and which break down food into small pieces that can be digested, saliva - digestive juice secreted by the salivary glands, hydrochloric acid - kill the bacteria inthe food and makes the food acidic, small intestine - highly coiled tube ,

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