1. Human digestion

2. Human digestive system (General plan) Accessory digestive organs

3. Sites of digestion Polysaccharides (starch, glycogen) Disaccharides (sucrose, lactose) Salivary amylase Smaller polysaccharides, maltose Proteins Polysaccharides Pepsin Pancreatic amylase Small polypeptides Maltose and other disaccharides Pancreatic trypsin and chymotrypsin DNA, RNA Fat globules Pancreatic nucleases Bile salts Disaccharidases Fat droplets Smaller polypeptides Nucleotides Pancreatic lipase Glycerol, fatty acids, glycerides Monosaccharides Nucleotidases Small peptides Nucleosides Dipeptidases, carboxypeptidase, aminopeptidase Nucleosidases, phosphatases Nitrogenous bases, sugars, phosphates Amino acids

5. Digestion in the Mouth Salivary glands Water Some enzymes Salivary amylase Lysozyme Mucus or mucin Teeth

6. Swallowing: from mouth to stomach

8. Churns & mixes food

9. Gastric glands

10. Parietal cells HCl, intrinsic factor

11. Goblet cells mucus

12. Chief cells pepsinogen, weak gastric lipase

13. Gastrin

14. Hormone

15. Controls gastric juices

19. Absorption in the small intestine

21. cecum

22. rectum

23. anus

24. Absorption of water and electrolytes

25. Concentration & elimination of solids

26. Home for bacteria

27. folic acid

28. vitamin K

29. several B-vitamins