1. digestion and absorption
2. mechanical digestion and chemical digestion
3. basic electrical rhythm(BER)
4. enterohepatic circulation of bile salt
5. gastrointestinal hormone
6. gastrin
7. receptive relaxation
8. mucus-bicarbonate barrie
9会计资格. gastric emptying
10. cholecystokinin(CCK)
11. entero-gastric reflex