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Digestive Process day five week two

Digestive Process day five week two - Digestive Process...

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Digestive Process Digestive Process Nutrition sci241 University of Phoenix Mark Watson October 8 2010 Kelley Gaske
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The digestive process starts with the mouth. The moth contains teeth, saliva glands, and the tongue, each has there own unique action to the process of digestion. The teeth will initially break down the food through the chewing motion, food is then further broken down by saliva which contains chemical substances that assist in breaking down the food, the tongue then acts as a slide through pushing the food down the pharynx, The pharynx is the tunnel like opening, or the throat. An involuntary muscle movement (contraction) occurs in the esophagus forces the food downward into the stomach. The stomach contains layers of muscular fibers which are responsible for chumming the food even further. At any time the stomach can hold up to a liter of food. The stomach also has many glands that secrete gastric juices that follow on from the process of the saliva glands of the mouth by breaking food down further into a thin crust like substance.
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