| A | B |
| esophagus | passage for food from pharynx to stomach |
| stomach | hollow muscular holding pouch for food |
| esophageal sphincter | keeps food from going up the esophagus |
| pyloric sphincter | keeps food from returning to stomach once it enters the small intestine |
| rugae | folds of mucosa in the stomach |
| salivary glands | produce saliva to moisten moisten food |
| liver | produces bile |
| bile | helps digest fats |
| gall bladder | stores bile |
| pancreas | produces substances that help digest food particles |
| mastication | chewing |
| mechanical digestion | physically breaking up food |
| enzymes | have the ability to break chemical bonds that hold food together |
| chemical digestion | process of breaking food down using enzymes |
| villi | increase small intestine ability to absorb nutrients |
| hernia | internal organ bulges through the abdominal wall |
| barium | liquid that coats the mucosa and can be seen on X ray |