Homework 10-15-12

Saliva is a clear substance that look like puss that has glands under the tongue.Helps allow food to digest.The esophagus is a long tube connected to the stomach.Has a process that allow food to travel to the esophagus which is prers.. waves.The mouth receives food.The pharynx is a tube connecting the mouth to the esophagus,also helps swalllowing food.

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