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LE Digestion Vocab
LE Nutrition Digestion Vocab
| Term | Definition |
|---|---|
| Ingestion | taking in of nutrients/food |
| mechanical digestion | physical breaking apart of large pieces to small pieces |
| chemical digestion | breaks large molecules (polymers) into small molecules (monomers); carbs --> simple sugars proteins --> amino acids lipids --> fatty acids & glycerol |
| absorption | transfer of small molecules across CELL membrane |
| mouth | site of ingestion; site of mechanical digestion & chemical digestion of carbohydrates/starches |
| epiglottis | flap that covers the trachea to prevent food from entering trachea |
| esophagus | tube that connects mouth (pharynx) to stomach |
| stomach | bag shaped organ; site of mechanical digestion (churning) & chemical digestion to form chyme; beginning of protein digestion |
| peristalsis | squeezing action that propels food through the esophagus |
| small intestines | absorption of nutrients & chemical digestion |
| large intestines | absorption of water |
| liver | produces bile and other enzymes, detoxifies blood |
| gall bladder | stores bile |
| pancreas | produces insulin & glucagon for the breakdown of glucose |
| rectum | storage place for feces |
| anus | sphincter that controls elimination of feces |
| chyme | partially digested food found in the stomach |
| bolus | small ball of chyme that enters small intestines |
| buffer | sodium bicarbonate neutralizes acidic chyme in small intestines |
| absorption | transfer of small molecules across CELL membrane |
| villi | fingerlike projections found in small intestines that increase surface area for absorption |
| 22. amylase | enzyme that breaks down starches; found in saliva (in mouth) |
| 23. lipase | enzyme that breaks down lipids (in small intestines) |
| 24. protease | enzyme that breaks down proteins (in stomach) |
| 25. bile | emulsifies lipids (breaks lipids to small particles); stored in gall bladder --> small intestines |
| 26. pepsin | enzyme that breaks down proteins (in stomach) |
| 27. pepsinogen | enzyme that breaks down proteins (in stomach) |