Online Science Curriculum & Lab Kits | Hands-On Labs



Exercise 1: Microscopic Observation of Digestive Structures

Data Table 1: Photos for Digestive System Microscopy Exercise

|Structure |Photo |Magnification |Characteristics |

|Duodenum, all four layers | | | |

|Duodenum, mucosa | | | |

|Duodenum, submucosa | | | |

|Duodenum, muscularis externa | | | |

|Duodenum, serosa | | | |

|Stomach, all four layers | | | |

|Stomach, mucosa | | | |

|Stomach, submucosa | | | |

|Stomach, muscularis externa | | | |

|Stomach, serosa | | | |

|Pancreas | | | |

Exercise 2: Digestive Enzymes and Physiology

Data Table 2: Carbohydrate Digestion

|Test Tube |Treatment |Observations |Conclusions |

|A37 |Amylase solution at 37oC | | |

|A |Amylase solution at room temperature| | |

|DW |Distilled Water at 37oC | | |

|DW37 |Distilled Water at room temperature | | |

Data Table 3: Protein Digestion

|Test Tube |Treatment |Observations |Conclusions |

|TDW |Trypsin, BAPNA, 37oC | | |

|TDW37 |Trypsin, BAPNA, room temperature | | |

|BDW |Trypsin, Distilled Water, 37oC | | |

|BDW37 |Trypsin, Distilled Water, room | | |

| |temperature | | |

|BT |BAPNA, Distilled Water, 37oC | | |

|BT37 |BAPNA, Distilled Water, room temperature | | |

Data Table 4: Relative Color of the Test Tubes as Compared to the Control Test Tubes

|Minutes |Test Tube 1 |Test Tube 2 |Test Tube 3 |Test Tube 4 |

|4 | | | | |

|6 | | | | |

|8 | | | | |

|10 | | | | |

|12 | | | | |

|14 | | | | |

|16 | | | | |

Exercise 3: Digestive System of the Pig

Data Table 5: Photos of the Abdominal Cavity, Showing Digestive System Organs

|Description |Photo(s) |

|Digestive system organs in the abdominal | |

|cavity | |

|Inside of stomach | |

|Salivary glands | |

|Mouth anatomy | |

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