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Figure 1. Structure of Villus AmylaseProteaseLipase Example of this Enzyme Source Substrate Products Optimum pH AmylaseProteaseLipase Example of this.

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Presentation on theme: "Figure 1. Structure of Villus AmylaseProteaseLipase Example of this Enzyme Source Substrate Products Optimum pH AmylaseProteaseLipase Example of this."— Presentation transcript:

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3 Figure 1. Structure of Villus

4 AmylaseProteaseLipase Example of this Enzyme Source Substrate Products Optimum pH AmylaseProteaseLipase Example of this Enzyme Salivary Amylase PepsinPancreatic Lipase SourceSalivary Glands Wall of Stomach Pancreas SubstrateStarchProteins and peptides Triglycerides And phospholipids ProductsMaltoseSmall Polypeptides Fatty Acids and Glycerol Optimum pH 71.57

5 Figure 2. Intestinal Structure

6 Figure 3. Arrangement of cells and ducts in a part of the pancreas that secretes digestive enzymes

7 StructureFunction MouthVoluntary Control of Eating. Mechanical digestion of food by chewing and mixing with saliva, which contains lubricants and enzymes that start starch digestion. EsophagusMovement of food by peristalsis from the mouth to the stomach StomachChurning and mixing with the secreted water and acid which kills foreign bacteria and other pathogens in food, plus initial stages of protein digestion. Small IntestineFinal stages of digestion of lipids carbohydrates, proteins, and nucleic acids, neutralizing stomach acid, plus absorption of nutrients. PancreasSecretion of lipase, amylase and protease LiverSecretion of surfactant in bile to break up lipid droplets Gall BladderStorage and regulate release of bile Large IntestineReabsorption of water, further digestion carbs by symbiotic bacteria, plus formation and storage of feces. Figure 4. The Human Digestive System

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9 Figure 5. Peristalsis movement from esophagus to small intestines

10 Figure 6. Detail structure of the small intestine

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12 Figure 7. Structure of the an intestinal villus

13 Figure 8. Scanning electron micrograph of villi in small intestine

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17 Figure 9. Example of methods of absorption in the small intestine

18 Figure 10. Lipid Absorption

19 Figure 11. Glucose Absorption

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21 Tapeworms sometimes infect humans, anchoring themselves to the wall of the small intestines. Based on how digestion is compartmentalized along the mammalian alimentary canal, what digestive functions would you expect these parasites to have? A single sandwich is likely to contain carbohydrates, lipids, and proteins. From a biochemical viewpoint, what will happen to each molecule of digestion? You ingest glucose molecule in the starch of a breakfast cereal. State as many specific locations as you can for this single glucose molecule from the time it is in your mouth to the time it enters a muscle cell of your right forearm. Lastly, Using materials you provide from home, create a labeled model of all digestive system structures beginning with the mouth and ending with the anus. Focus on the materials used to demonstrate the physical structure of each organ or tissue. Be sure to include the accessory organs too! (Rubric on next slide)

22 CATEGORY 4 = A 3 = B 2 = C 1= D Assignment #1: Digestion Diagram Diagram or model has all of the following: - structures present - materials are creatively linked to the original structure -final product is neat and well organized - shows thought and a clear understanding of the digestive process (score x6) Diagram or model has 3 of the following: - structures present - materials are creatively linked to the original structure -final product is neat and well organized - shows thought and a clear understanding of the digestive process (score x6) Diagram or model has 2 of the following: - structures present -materials are creatively linked to the original structure -final product is neat and well organized - shows thought and a clear understanding of the digestive process (score x6) Diagram or model has 1 of the following: - structures present - materials are creatively linked to the original structure -final product is neat and well organized - shows thought and a clear understanding of the digestive process (score x6)

23 Problems with the Digestive System Choose a specific problem with the digestive system from the list below. Create an interactive poster on Glogster – (http://edu.glogster.com/) designed to educate patients with that disorder to be given to the school nurse to share with other students. Information that must be included in your Glog: Describe the Problem Causes Symptoms Treatments Those affected (if applicable) Questions with answers to age appropriate questions concerning this disorder Age appropriate diagrams and videos that help explain this disorder (at least one of each) Choices of Digestive Disorders: Anorexia, Alactasia (lactose intolerance), achalasia, Anal fistula, Appendicitis, Bulimia, Diverticulitis, gastric ulcer, Celiac disease, constipation, diarrhea, Cholelithiasis (gall stones),Esophageal reflux, Hiatal hernia, gastritis, ileus, colorectal cancer, hepatitis, cholecystitis, IBS (irritable bowel syndrome), pancreatitis, Crohn’s disease, volvulus, or an approved digestive problem of your choice. (Rubric on next slide)

24 CATEGORY 4 = A 3 = B 2 = C 1= D Assignment #2: Problems with the Digestive System -Source information is clear for all content - Makes excellent use of font, color, graphics, effects, etc. to enhance Glog -Covers topic in depth with details and examples - Subject knowledge is excellent -Met all requirements and exceeded -Excellent Spelling and Grammar (score x7) -Source information collected for all content with few errors -Makes excellent use of font, color, graphics, effects, etc. to enhance Glog -Covers topic and subject area knowledge appears to be good -All requirements are met -Few spelling and grammatical errors (score x7) -Source information collected for all content with some errors -Makes use of font, color, graphics, effects, etc. but some distract from Glog content -Covers topic and subject area with a few errors -One or two requirements are not met -Few spelling and grammatical errors (score x7) -Very little or no information collected for all content with many errors -Makes use of font, color, graphics, effects, etc. but some distract from Glog content -Covers topic and subject area with a few errors -Two or more requirements are not met -Multiple spelling and grammar errors (score x7)

25 Assignment #3: A Day in the Life Using the digestive disorder studied in Assignment #2, write a one-page diary entry, in first person, reflecting on what it would be like to have this disorder. How does this disorder affect daily life? How does it affect what is eaten? What is done to overcome the symptoms of this disorder? How does it affect your interaction with others? How does it affect your overall mood and behavior? The diary entry must be submitted in Microsoft Word using 1 inch margins, 12 point, Times New Romans Font, double spaced, and heading the paper with the title and your name. Use spell and grammar check before submitting. (Rubric on next slide)

26 CATEGORY 4 = A 3 = B 2 = C 1= D Assignment #3: A Day in the Life - Diary Entry Narrative has all requirements- Creative - Focused on assignment story -Clear organization - Excellent Spelling and Grammar (score x5) Narrative is missing one requirements- Creative - Assignment story is apparent - Good organization - One or two spelling and grammar errors (score x5) Narrative is missing some requirements - Lacks creativity - Assignment story is missing connection to person -Lacks organization - Many spelling and grammar errors (score x5) Narrative is missing requirements - Lacks creativity - Assignment story lacks empathy - Lacks organization - multiple spelling and grammar errors (score x5)

27 That’s All Folks !!!


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