| A | B |
|---|
| mechanical digestion | changes the size of particles but not the chemical composition |
| saliva | fluid containing digestive enzymes produced in the mouth |
| gastric juice | fluid containing hydrochloric acid, pepsin, and mucus |
| pancreatic juice | fluid containing digestive enzymes released into the small intestine |
| peristalsis | wavelike movement of muscles which moves food particles through digestive tract |
| chemical digestion | changes the size of molecules by chemical reactions |
| peritoneum | membrane which surrounds digestive organs of the abdominal cavity |
| mesentary | membrane which connects the stomach and intestines |
| pyloric sphincter | muscles which control the entry of particles into the small intestine |
| lower esophageal sphincter | muscle which prevents regurgitation of stomach contents |
| villi | fingerlike projections of the mucous membrane of the small intestine |
| microvilli | fingerlike projections of the cell membrane on the epithelial cells of the small intestine |
| stomach | initial site of protein digestion |
| liver | place of bile production |
| duodenum | place where the greatest amount of chemical digestion occurs |
| jejunum and ileum | place where the greatest amount of absorption occurs |
| pancreas | accessory organ that makes many digestive enzymes |
| gallbladder | stores bile for later release into the small intestine |
| colon | last place for water and electrolyte absorption in the digestive system |
