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Digestive Study G.

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
villi   finger-like projections that cover the ridges and folds.  
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digestion   the process that breaks down food into small molecules so that they can be absorbed and moved into the blood.  
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mechanical digestion   when food is chewed mixed, and churned.  
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chemical digestion   when chemical reactions occur that break down large molecules of food into smaller ones.  
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enzyme   type of protein that speeds up the rate of a chemical reaction in your body.  
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peristalsis   move food through the entire digestive tract.  
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chyme   thin, watery liquid  
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