| A | B |
|---|
| peristalsis | a wavelike motion that moves food through the digestive system |
| villi | loop-like (or fingerlike) structures in the wall of the small intestine in which nutrients are passed from the small intestine into the blood |
| pepsin | an enzyme in the stomach that helps digest proteins, such as milk, cheese, meat, and eggs |
| feces | undigested food material stored in the rectum |
| mouth | Where does digestion begin? |
| small intestine | Where is food liquified through the release of juices from the pancreas and liver? |
| epiglottis | the little flap that closes when one swallows to keep food and liquid from getting into the lungs |
| hydrochloric acid | the acid produced in the stomach that aids pepsin in digesting proteins |
| small intestine | Where does most chemical digestion occur? |
| saliva | What liquid begins the chemical breakdown of food? |
| molars | the teeth at the back of the mouth used to grind and crush food |
| incisors | the teeth the front (or, in the center) of the mouth that cut food into small pieces |
