| A | B |
|---|
| Middle region of SI | jejunum |
| Upper region of SI | duodenum |
| Last region of SI | ilieum |
| sphincter at end of SI | ileo-cecal valve |
| sphincter at upper end of SI | pyloric sphincter |
| length of SI | 20 feet |
| hormone which stimulates gall bladder | cholecystokinin (CCK) |
| lymph capillary | lacteal |
| function of villi | increase surface area for absorption |
| function of plicae circulares | cause chyme to spiral; increases TIME for absorption |
| secrete mucus in GI tract | goblet cells |
| Brunners glands | secrete alkaline mucus in upper duodenum |
| stores bile | gall bladder |
| bilirubin and biliverdin | waste products of RBC breakdown |
| monosaccharides and amino acids | absorbed into blood capillary at villus |
| fatty acids and glycerol | absorbed into lymph capillary at villus |
| Digestive juice which is NOT an enzyme | bile |
| physically breaking apart fat globules | emulsification |
| stimulus for release of CCK | high-fat meal |
| diameter of SI | one inch |
