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Definition
| to help convert foods into simpler molecules that can be absorbed and used by the cells of the body |
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| one-way tube that passes through the body |
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| Parts of Digestive system |
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Definition
| mouth, pharyx, esophagus, stomach, small intestine, and large intestine |
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Definition
| the physical breakdown of food into smaller pieces. |
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| anchored to bones of the jaw and are protected by enamel |
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Definition
| large food molecules are broken down into smaller food molecules |
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Definition
| contains enzyme called AMYLASE- breaks the chemical bonds in starches to release sugar |
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Definition
| food tube from the throat the bolus of food enters to travel to the stomach |
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Definition
| contractions of smooth muscle that squeeze food through the esophagus down to the stomach |
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Definition
| Food from the esophagus enters this large muscular sac. Mechanical and chemical digestion continue |
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| lining of stomach contains millions of microscopic gastric glands that release the number of substances into the stomach. mucus lubricates and protects stomach wall.hydrochloric acid makes contents of stomach acidic. activates pepsin. |
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Definition
| an enzyme that begins the digestion of proteins and is secreted by a third set of stomach glands |
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| stomach muscles contract to churn and mix stomach fluids and food, gradually producing a mixture called chyme |
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Definition
| duodenum, jejunum, and lleum |
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Definition
| most of chemical digestion and absorbtion. as chyme enters intestine, it mixes with enzymes and digestive fluids from pancreas, liver, and lining of duodenum |
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Definition
| folded surfaces of small intestine covered with these fingerlike projections |
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Definition
| surfaces of cells of villi are covered with thousands of fingerlike projection. provide for an enormous surface area for absorbtion of nutrients |
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Definition
| Slow wavelike contractions of smooth muscle carry the chyme along surface. nutrient molecules absorbed into cells, lining the small intestine |
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Term
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Definition
| Chyme enters here or colon. removes waste from undigested material that is left. absorbed through walls. waste material remaining passes through rectum and eliminated from body |
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