2. Digestion, Absorption and Transport Copyright 2005 Wadsworth Group, a division of Thomson Learning

3. Digestion Basic anatomy of the GI tract –mouth  esophagus  stomach  small intestine  large intestine  rectum  anus –lumen Copyright 2005 Wadsworth Group, a division of Thomson Learning

4. GI Tract Anatomy Copyright 2005 Wadsworth Group, a division of Thomson Learning

6. Digestion Mouth –Tongue –Teeth Mastication Copyright 2005 Wadsworth Group, a division of Thomson Learning

7. The Teeth Copyright 2005 Wadsworth Group, a division of Thomson Learning

8. Digestion Pharynx Epiglottis Esophagus –Esophageal sphincters –Bolus Copyright 2005 Wadsworth Group, a division of Thomson Learning

9. Digestion Stomach –Chyme –Pyloric sphincter Copyright 2005 Wadsworth Group, a division of Thomson Learning

10. Stomach Muscles Copyright 2005 Wadsworth Group, a division of Thomson Learning

11. Digestion Small intestine –Duodenum –Jejunum –Ileum Copyright 2005 Wadsworth Group, a division of Thomson Learning

12. Digestion Gallbladder Pancreas Copyright 2005 Wadsworth Group, a division of Thomson Learning

13. Digestion Large intestine = colon –Ileocecal valve –Appendix Rectum –Anus Copyright 2005 Wadsworth Group, a division of Thomson Learning

14. Muscular Action of Digestion Peristalsis Copyright 2005 Wadsworth Group, a division of Thomson Learning

15. Peristalsis & Segmentation Copyright 2005 Wadsworth Group, a division of Thomson Learning

16. Muscular Action of Digestion Stomach action Copyright 2005 Wadsworth Group, a division of Thomson Learning

17. Muscular Action of Digestion Segmentation Copyright 2005 Wadsworth Group, a division of Thomson Learning

18. Muscular Action of Digestion Sphincter contractions –Reflux Copyright 2005 Wadsworth Group, a division of Thomson Learning

20. Secretions of Digestion Catalysts –Hydrolysis –Digestive enzymes Copyright 2005 Wadsworth Group, a division of Thomson Learning

21. Secretions of Digestion Saliva –Salivary glands Water, salts, mucus, enzymes Copyright 2005 Wadsworth Group, a division of Thomson Learning

22. Secretions of Digestion Stomach –Gastric juice –Gastric glands Water, enzymes, hydrochloric acid (HCl) Copyright 2005 Wadsworth Group, a division of Thomson Learning

23. Secretions of Digestion Stomach –Goblet cells Mucus Copyright 2005 Wadsworth Group, a division of Thomson Learning

24. Secretions of Digestion Pancreas –Pancreatic juice Enzymes, bicarbonate Copyright 2005 Wadsworth Group, a division of Thomson Learning

25. Secretions of Digestion Liver –Bile Emulsifier Gallbladder Copyright 2005 Wadsworth Group, a division of Thomson Learning

26. Secretions of Digestion Protective factors Copyright 2005 Wadsworth Group, a division of Thomson Learning

27. The Final Stage Stools Colon –Fermentation of undigested residues Copyright 2005 Wadsworth Group, a division of Thomson Learning

29. Digestion of a Sandwich Copyright 2005 Wadsworth Group, a division of Thomson Learning

30. Digestion of a Sandwich Copyright 2005 Wadsworth Group, a division of Thomson Learning

31. Absorption Copyright 2005 Wadsworth Group, a division of Thomson Learning

32. Absorption in the Small Intestine Villi –Microvilli –Capillaries and lacteals –Chylomicrons Crypts Copyright 2005 Wadsworth Group, a division of Thomson Learning

33. The Small Intestinal Villi Copyright 2005 Wadsworth Group, a division of Thomson Learning

34. The Small Intestinal Villi, cont’d Copyright 2005 Wadsworth Group, a division of Thomson Learning

35. Circulatory Systems Vascular system –Heart –Arteries –Capillaries –Veins Copyright 2005 Wadsworth Group, a division of Thomson Learning

37. Circulatory Systems Vascular system –Portal vein –Hepatic vein Copyright 2005 Wadsworth Group, a division of Thomson Learning

38. The Liver Copyright 2005 Wadsworth Group, a division of Thomson Learning

39. Circulatory Systems Lymphatic system –Lymph –Thoracic duct Subclavian vein Copyright 2005 Wadsworth Group, a division of Thomson Learning

40. Regulation Homeostasis Copyright 2005 Wadsworth Group, a division of Thomson Learning

41. Regulation Hormones –Gastrin –Secretin –Cholecystokinin = CCK –Gastric-inhibitory peptide = GIP Copyright 2005 Wadsworth Group, a division of Thomson Learning

42. Digestive Problems Choking –Trachea –Larynx –Heimlich maneuver Copyright 2005 Wadsworth Group, a division of Thomson Learning

44. Heimlich Maneuver

45. Digestive Problems Vomiting Diarrhea –Irritable bowel syndrome Copyright 2005 Wadsworth Group, a division of Thomson Learning

46. Digestive Problems Constipation Hemorrhoids Diverticula –Diverticulosis –Diverticulitis Copyright 2005 Wadsworth Group, a division of Thomson Learning

47. Diverticula in the Colon Copyright 2005 Wadsworth Group, a division of Thomson Learning

48. Digestive Problems Belching Gas Hiccups Copyright 2005 Wadsworth Group, a division of Thomson Learning

49. Digestive Problems Heartburn = gastroesophageal reflux –Antacids and acid controllers –Indigestion Copyright 2005 Wadsworth Group, a division of Thomson Learning

50. Gastroesophageal Reflux

51. Digestive Problems Ulcers –Peptic ulcer –Helicobactor pylorii infection –Use of certain anti-inflammatory drugs –Disorders that cause excessive acid secretion Copyright 2005 Wadsworth Group, a division of Thomson Learning

52. Strategies for GI Problems Copyright 2005 Wadsworth Group, a division of Thomson Learning