| A | B |
|---|
| mouth | where digestion begins |
| esophagus | long tube that carries food from the mouth to stomach |
| stomach | muscular bag that changes food to chyme |
| small intestines | where absorption of food takes place |
| large intestines | where water is absorbed to produce feces |
| liver, pancreas, salivary glands | produce enzymes for digestion |
| enzyme | type of protein that speeds up a chemical reaction |
| mechanical digestion | changing food physically by chewing, mixing, and churning |
| chemical digestion | breaking down food by a chemical reaction |
| peristalsis | waves of muscle contractions that moves food along the digestive tract |
| chyme | thin, watery liquid produced by mixing food and enzymes |
| villi | fingerlike projections that increase surface area for absorption |
| bacteria in large intestines | feed on cellulose and produce vitamins |
