| A | B |
| mouth | where mechanical and chemical digestion begins |
| teeth | cut, grind, tear food (mechanical digestion) |
| saliva | mixes with food as amylase starts to break carbohydrates (chemical digestion) |
| esophagus | transports food from mouth to stomach by peristalsis |
| stomach | breaks food down and changes it into chyme |
| duodenum | first part of small intestine, where major portion of digestion takes place |
| liver | produces bile, which physically breaks rat particles into smaller pieces |
| pancreas | adds enzymes that break down carbohydrates,fats, and proteins; also makes insulin |
| villi | little projections in the small intestine |
| large intestine | absorbs water from the undigestd chyme; maintains homeostasis |