1. The Digestive System

3. The Mouth

4. The Digestive System The Mouth Physical Digestion

5. The Digestive System The Mouth Physical Digestion Chewing

6. The Digestive System The Mouth Physical Digestion Chewing Chemical Digestion

7. The Digestive System The Mouth Physical Digestion Chewing Chemical Digestion Saliva starts starch digestion

8. The Digestive System

9. Esophagus

10. The Digestive System Esophagus Connects mouth to stomach

11. The Digestive System

12. Stomach

13. The Digestive System Stomach Chemical digestion

14. The Digestive System Stomach Chemical digestion Enzymes and hydrochloric acid

15. The Digestive System Stomach Chemical digestion Enzymes and hydrochloric acid begin protein digestion

16. The Digestive System

17. Liver

18. The Digestive System Liver Produces bile to emulsify fat

19. The Digestive System

20. Pancreas

21. The Digestive System Pancreas Produces most digestive enzymes

22. The Digestive System Pancreas Produces most digestive enzymes These enzymes digest carbohydrates, proteins, and fats

23. The Digestive System

24. Duodenum

25. The Digestive System Duodenum First part of small intestine

26. The Digestive System Duodenum First part of small intestine Receives bile from liver

27. The Digestive System Duodenum First part of small intestine Receives bile from liver Receives enzymes from pancreas

28. The Digestive System Duodenum First part of small intestine Receives bile from liver Receives enzymes from pancreas Adds more enzymes

29. The Digestive System

30. Small Intestine

31. The Digestive System Small Intestine Chemical Digestion completed

32. The Digestive System Small Intestine Chemical Digestion completed Proteins digested into amino acids

33. The Digestive System Small Intestine Chemical Digestion completed Proteins digested into amino acids Carbohydrates digested into simple sugars

34. The Digestive System Small Intestine Chemical Digestion completed Proteins digested into amino acids Carbohydrates digested into simple sugars Fats digested into fatty acids and glycerol

35. The Digestive System Small Intestine Absorption of all nutrients into bloodstream

36. The Digestive System Small Intestine Absorption of all nutrients into bloodstream amino acids

37. The Digestive System Small Intestine Absorption of all nutrients into bloodstream amino acids simple sugars

38. The Digestive System Small Intestine Absorption of all nutrients into bloodstream amino acids simple sugars fatty acids and glycerol

39. The Digestive System Small Intestine Absorption of all nutrients into bloodstream amino acids simple sugars fatty acids and glycerol vitamins and minerals

40. The Digestive System

41. Large Intestine

42. The Digestive System Large Intestine reabsorbs water back into bloodstream

43. The Digestive System Large Intestine reabsorbs water back into bloodstream healthful bacteria make some vitamins from waste

44. The Digestive System

45. Rectum

46. The Digestive System Rectum Temporarily stores wastes before evacuation

47. The Digestive System

48. Anus

49. The Digestive System Anus Exit for waste

50. The Digestive System Anus Exit for waste Kept closed by anal sphincter muscle

51. Digestion Summary

52. Enzyme Summary

53. End of Digestion Summary