1. THE DIGESTIVE SYSTEM

2. The Digestive System Function Parts How the parts work together

3. Function of Digestive System Absorption of food Removal of waste into bloodstream Break down food to get nutrients to cells

4. Organs

5. Breaking down food Mouth Stomach Small intestines Large intestines Rectum Peripheral organs

6. Mechanical Digestion Physically breaking something apart –Teeth –Muscles of the stomach

7. Chemical Enzymes and acids added –break down big food molecules

8. Enzyme

9. Mouth Teeth Salivary glands- starts breaking down and starts digestion Tongue

10. Mouth Mechanical Chemical

11. Mouth - Mechanical Teeth – Incisor – Canine – Molar – Pre-Molar

12. Mouth - Chemical Saliva – Salivary amylase Breaks down starches into sugars

13. Mouth Teeth Salivary glands- starts breaking down and starts digestion Tongue

14. Esophagus

15. Stomach Grinds and dissolves food Main part of digestion

16. Stomach J- shaped organ Can hold 2 liters of food Most mechanical digestion occurs here

17. Stomach - Mechanical Strong muscles grind up food particles

18. Stomach - Chemical Pepsin – proteins amino acids Hydrochloric Acid -Kills bacteria - Provides good environment for pepsin

19. Small Intestine ~ 6 meters (20 feet) long ~ 2 or 3 cm (1 inch) wide Almost all chemical digestion occurs here

20. Small Intestine Most chemical digestion occurs here. Absorption of nutrients occurs here.

21. Intestines (Bowel) Large Stores, Compacts, and Eliminates indigestible material

22. Fast Facts About Villi Stretch out- 18ft Flatten surface- larger than a tennis court

23. Villi absorb nutrients

24. Small intestine - Chemical Bile – breaks fats into small particles – made in liver

25. Small intestine - Chemical Trypsin – made by pancrease –breaks down proteins

26. Large intestine Bacteria – cellulose - vitamin K Absorbs water Compacts stool

28. Rectum Stores feces Leaves rectum and body through the anus

30. Salivary Glands Produce – salivary amylase –starches simple sugars

32. Pancreas Produces trypsin and other enzymes to break down proteins

34. Liver Produces bile to break down fats

37. Gall Bladder Stores bile from liver Controls release of bile small intestine.

39. How the Digestive System works Break down food Absorption of food Getting rid of waste

40. Organs

41. Breaking down food Mouth Stomach Small intestines Large intestines Rectum Peripheral organs

42. Mechanical Digestion Physically breaking something apart –Teeth –Muscles of the stomach

43. Chemical Enzymes and acids added –break down big food molecules

44. Mouth Teeth Salivary glands- produce salivary amylase Tongue

50. Mouth Teeth Salivary glands- starts breaking down and starts digestion Tongue

53. Esophagus Connects mouth to stomach Peristalsis – muscles move food to stomach.

55. Esophagus

57. Stomach mechanical digestion - grinding chemical digestion –pepsin - proteins amino acids –amylase - starches sugars

58. Stomach Grinds and dissolves food Main part of digestion

63. Small Intestine ~ 6 meters (20 feet) long ~ 2 or 3 cm (1 inch) wide

64. Small Intestine Absorption of nutrients occurs here.

66. Small intestine - Chemical Bile – breaks fats into small particles – made in liver

67. Fast Facts About Villi Stretch out- 18ft Flatten surface- larger than a tennis court

68. Gall Bladder

72. Small intestine - chemical Trypsin – made by pancreas –breaks down proteins

82. Large intestine Bacteria – cellulose - vitamin K Absorbs water Compacts stool

83. Intestines (Bowel) Large Stores, Compacts, and Eliminates indigestible material

86. Rectum Stores feces Leaves rectum and body through the anus

89. The Digestive System Function Parts How the parts work together