1. Hormonal Control of Digestion

2. Gastrin = hormone produced by stomach. Gastrin + Triggered by entry of food into the stomach, and the stretching of the stomach

3. Gastrin Gastrin +

4. Gastrin Gastrin + Promotes the release of HCl &, stomach churning

5. Cross section of the stomach these are the folds

8. Cross section of the stomach these are the folds

11. Cross section of the stomach these are the folds

12. Cross section of the stomach these are the folds

13. Secretin = hormone produced in cells of the small intestine Triggered by HCl acid in the chyme enters bloodstream and stimulates pancreatic cells. Response = Output of sodium bicarbonate buffer.

14. ALSO, stimulates the liver to produce bile BILE = emulsifies FAT Secretin = hormone produced in cells of the small intestine First hormone discovered

15. Triggered by partially digested protein & fat that enters the sm. intestine CCK = hormone produced in cells of the small intestine CC K

16. Stimulates Gallbladder contraction to release bile Stimulates Pancreas to release enzymes Reduces appetite CCK = hormone produced in cells of the small intestine

17. Enterogastrone Hormone produced in small intestine Triggered by acid - rich chyme filled with lipids. Target cells in the stomach and blocks gastrin Slows digestion b/c digestion of fats takes more time Entero- gastrone -

18. Enterogastrone Entero- gastrone - Inhibits peristalsis and acid secretion of the stomach Slows digestion in the stomach.