changes taking place in the food during the process of digestion
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The first step in digestion is performed by teeth where mechanical digestion take place. As we chew the food the saliva that contain the enzyme changes the starch to sugar ( chemical digestion) the tongue then pushes the bolus food to esophagus where peristalsis movement of its wall pushes the food down to stomach.
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Digestion involves the mixing of food, it's movement through the digestive track , and the chemical breakdown of large molecules of food into smaller molecules. Digestion begins in the mouth, when we chew and swallow and is completed in small intestine.
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