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REVIEW Digestion

REVIEW Digestion. 11. Identify each structure labeled in the diagram. oral cavity/mouth. gall bladder. stomach. pancreas. large intestine. small intestine. rectum. 12. Where does protein digestion begin? 13. What is the function of F?

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REVIEW Digestion

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  1. REVIEWDigestion

  2. 11. Identify each structure labeled in the diagram. oral cavity/mouth gall bladder stomach pancreas large intestine small intestine rectum

  3. 12. Where does protein digestion begin? • 13. What is the function of F? • 14. Where are nutrients absorbed into the blood? In the stomach Absorb water In the small intestine/villi

  4. 15. What does C produce? Where does it go? 16. What is the function of G? 17 Chemical digestion is completed in this structure. 18. What type of digestion occurs in A? Pancreatic juice Small intestine/duodenum store bile small intestine/duodenum mechanical and chemical

  5. 19. What is the name of this process? What is its function? 20. Where in the digestive tract does this process occur? • peristalsis • To push food through the digestive tract esophagus, stomach, small intestine, large intestine

  6. 21. What is structure F? What is the function of this substance? 22. Identify structure B. What kind of digestion occurs here? 23. What is the function of structure A? • liver • to produce bile • stomach • Chemical digestion of proteins by pepsin • Mechanical digestion (wall of stomach churns food) Pushes food down into the stomach using peristalsis

  7. 24. Through which of these structures does food pass? • 25. Which organs are not part of the digestive tract? How do they aid in digestion? Esophagus (A) Small intestine (D) Stomach (B) • Liver (F) – produces bile that goes to the SI • Gall bladder (E) – stores bile • Pancreas (C) – releases pancreatic juice into SI

  8. Where most chemical digestion occurs • Where chemical digestion is completed • Lined with VILLI which absorb nutrients into the blood 26. Describe the role of the small intestine in digestion.

  9. 27. Identify the labeled organs. A- mouth B - Esophagus C – Stomach D – Pancreas E - Large intestine F - Appendix G - Small intestine H – Gall bladder I - Liver

  10. 28. Through what organs does food pass? (in order) mouth Esophagus Stomach Small intestine Large intestine Rectum Anus

  11. 29. Where excess water reabsorbed? 30. What occurs in structure G? 31. What does I produce? Where does it go? 32. This is where chemical digestion begins. 33. This is where chemical digestion ends. Large intestine Villi absorb nutrients into blood Bile – into small intestine mouth Small intestine/duodenum

  12. 34. Identify organs where there is no digestion occurring. Esophagus Liver Salivary glands Pancreas Gall bladder

  13. 35. Explain the difference between mechanical and chemical digestion. Mechanical is a physical breakdown, while chemical digestion breaks down complex molecules into more simple molecules using enzymes.

  14. 36. Where does mechanical digestion begin? How? • Mouth – teeth grind up food 37. Where does chemical digestion begin? How? • Mouth – ptyalin/salivary amylase in saliva starts to chemically break down starches into sugar 38. Where does chemical digestion end? • Duodenum (small intestine)

  15. 39. Where does most chemical digestion occur? • Duodenum (small intestine) 40. Where and how are nutrients absorbed once food has been completely broken down. • They are absorbed in the villi of the small intestine by diffusion.

  16. 41. Identify the digestive organ described. a. Where the digestion of protein begins. stomach b. Where mechanical digestion begins. mouth c. Site of water absorption. Large intestine d. All chemical digestion is completed here. Duodenum (SI)

  17. 41. Identify the digestive organ described. e. Where the breakdown of starch begins. mouth f. Where bile is stored. Gall bladder g. Releases many enzymes into the SI. pancreas

  18. 41. Identify the digestive organ described. h. Pushes food into the stomach. esophagus i. Where the absorption of nutrients occurs. Small intestine/villi j. Lining is protected by a mucus layer. stomach

  19. 42. What enzyme is found in saliva? What does it break down? Salivary amylase/ptylin Carbohydrates (starches sugar) 43. What enzyme is produced in the stomach? What does it break down? Pepsin protein

  20. 44. There are many enzymes found in intestinal juice made in the small intestine. What do they break down? Carbohydrates and proteins 45. There are many enzymes found in pancreatic juice. What do they break down? Carbohydrates, lipids, proteins 46. Is bile an enzyme? Why or why not? Bile is not an enzyme because it emulsifies fat. IT breaks down large droplets of fat into smaller droplets which is mechanical digestion, not chemical digestion.

  21. 47 Salivary gland mouth epiglottis esophagus liver stomach Gall bladder duodenum pancreas Large intestine Small intestine appendix anus

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