Science
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Created by:
caroline_reynolds on May 26, 2011
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Description:
Digestion
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18 terms
Terms | Definitions |
|---|---|
 Absorption | The process by which nutrient molecules pass through the wall of your digestive system into your blood |
| Digestion | the process by which the body breaks down food into small nutrient molecules |
| Saliva | The fluid released when the mouth waters that plays an important role in both mechanical and chemical digestion |
| Enzymes | protein substances that speed up chemical reactions. |
| Epiglottis | a flap of tissue that seals off the windpipe and prevents food from entering |
| Esophagus | muscular tube that connects the mouth to the stomach |
| Mucus | a thick, slippery substance produced by the body |
| Peristalsis | involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system |
| Stomach | large muscular sac that continues the mechanical and chemical digestion of food |
| Small Intestine | responsible for most chemical digestion and absorption of nutrients |
| Liver | Large organ just above the stomach that produces bile |
| Bile | A substance produced by the liver that breaks up fat particles. |
| Gallbladder | the organ that stores bile |
| Pancreas | located behind the stomach; secretes enzymes that breaks down carbs, fats, and proteins |
| Villi | finger-like projections that increase the surface area and increase absorption |
| Large Intestine | the last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body. Also bacteria help make vitamins |
| Rectum | A short tube at the end of the large intestine where waste material is compressed into a solid form before being eliminated |
| Anus | A muscular opening at the end of the rectum through which waste material is eliminated from the body |
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