| A | B |
| Gall bladder | Stores bile |
| Emulsifies fats | Bile |
| Makes bile green | Bilirubin |
| Separates stomach from small intestine | Pyloric sphincter |
| Rough stomach lining | Rugae |
| Acid here causes heartburn | Esophagus |
| Digests sugars | Amylase |
| Semi-liquid food in stomach | Chyme |
| Insulin-producing cells | Islets of Langerhans |
| First section of small intestine | Duodenum |
| Inactive stomach enzyme | Gastrinogen |
| Absorbable form of fats | Micelles |
| Produces a large variety of digestive enzymes | Pancreas |
| A hole in the gastric wall | Ulcer |
| Stomach acid level | pH 2 |
| Natural antacid for intestine | Bicarbonate |
| Muscle action of esophagus | Peristalsis |
| Structures that absorb nutrients | Microvilli |
| Vitamin B absorbed here | Large intestine |
| Last region of small intestine | Ilium |