5 Lets turn our attention to the digestive system Ensure that your gelatin has

5 lets turn our attention to the digestive system

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anatomical structures is affected. 5: Let’s turn our attention to the digestive system. Ensure that your gelatin has set up. Label your four bowls “A”, “B”, “C”, and “D”. Set “A” aside. Use a butter knife to cut the gelatin in “B” into ½ inch sections (leave in bowl). Sprinkle one teaspoon of meat tenderizer onto “C”. Finally, cut “D” into ½ inch sections (leave in bowl), then sprinkle one teaspoon of meat tenderizer onto the surface. In summary, your four bowls of gelatin should be as follows: A – unmodified B – cut C – meat tenderizer added D – cut, with meat tenderizer added 6: Allow the bowls of gelatin to sit, untouched, for thirty minutes. Using the measuring cup, estimate the amount of gelatin that has liquefied in each bowl. Enter those values below (2pts). Amount of Liquefied Gelatin “A” ~0 cups (insignificant) “B” ~1/8 of a cup “C” ~1/4 of a cup 4 BIOL-215
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“D” ~3/8 of a cup Briefly (3 sentences) relate your observations from this demonstration to the process of digestion. What functions of the digestive system does this exercise demonstrate? (3pts) Gelatin sample “A” represents a piece of food that has not yet undergone any part of the digestive process, while sample “B” represents a piece of food that has undergone mastication (mechanical digestion- which has allowed the sample to be slightly broken down), but has not yet interacted with any of the digestive enzymes (i.e. salivary enzymes, gastric enzymes, pancreatic enzymes). Sample “C” represents food coming in contact with some of the enzymes of the digestive system (i.e. salivary amylase, gastric enzymes, pancreatic enzymes), thus leading to some chemical digestion, while sample “D” represents a piece of food that has partially undergone chemical and mechanical digestion (has both been chewed and come into contact with some of the digestive enzymes), which is why this sample was the most broken down of all the samples (liquified the most). Which organ(s) is/are responsible for the process modeled by bowl “B”? Answer all that apply (1pt) A. The mouth (the teeth) B. The esophagus C. The stomach D. The small intestine Which organ(s) is/are responsible for the process modeled by bowl “C”? Answer all that apply (1pt) A. The salivary glands B. The stomach C. The pancreas D. The liver 5 BIOL-215
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