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NFL Ch.3 vocab

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Term
Definition
Kilocalorie   The unit used to measure the energy value of food.  
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Digestion   The process by which the body breaks down food, and the nutrients in food, into simpler parts for use in growth, repair, and maintenance.  
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Enzyme   A complex protein produced by cells to speed a specific chemical reaction in the body.  
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Gastrointestinal (GI) Tract   A muscular tube leading from mouth to the anus though which food passes as it is digested.  
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Mastication   Chewing.  
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Peristalsis   A series of squeezing actions by the muscles in the gastrointestinal tract that helps move food through the tract.  
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Gastic Juices   A mixture of hydrochloric acid, digestive enzymes, and mucus produced by the stomach that helps digest food.  
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Chyme   A mixture of gastric juices and food formed in the stomach during digestion.  
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Bile   A digestive juices produced by the liver to aid fat digestion.  
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Feces   Solid wastes that result from digestion.  
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Absorption   The passage of nutrients from the digestive tract into the circulatory or lymphatic system.  
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Villi   Tiny, fingerlike projections that cover the wall of the small intestine.  
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Metabolism   All the chemical changes that occur as cells produce energy and materials needed to sustain life.  
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ATP ( adenosine triphosphate)   The storage form of energy in the body.  
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Food Allergy   A reaction of the immune system to certain proteins found in foods.  
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Food Intolerance   An unpleasant reaction to a food that does not cause an immune system response.  
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Diarrhea   Frequent expulsion of watery feces.  
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Constripation   A condition that occurs when the feces become massed and hard in the large intestine, making expulsion infrequent.  
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Indigestion   A difficulty in digesting food.  
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Heartburn   A burning pain in the middle of the chest caused by stomach acid flowing back into the esophagus.  
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Ulcer   An open sore in the lining of the stomach or small intestine caused by a bacterium.  
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Gallstones   Small crystals that form bile in the gallbladder.  
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Diverticulosis   A disorder in which many abnormal pouches form in the intestinal wall.  
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Created by: Albany.Magaw
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