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Digestive System Functions
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Digestive System Functions
🔬 Part 1: Digestive System Structures and Functions
1. Match each digestive organ with its primary function:
1. Mouth
2. Stomach
3. Small intestine
4. Large intestine
5. Liver
A. Water absorption and egestion
B. Nutrient absorption
C. Mechanical and chemical digestion with gastric juices
D. Ingestion and mechanical digestion
E. Bile production for fat digestion
2. Which organ is primarily responsible for nutrient absorption?
Stomach
Small intestine
Large intestine
Oesophagus
3. The oesophagus functions primarily as a:
Digestion chamber
Transport tube
Absorption site
Storage organ
🧪 Part 2: Digestive Enzymes and Processes
4. Name the three main types of digestive enzymes and explain their specific roles:
5. Fill in the blanks about the digestive processes:
The four main stages of digestion are ____________, ____________, ____________, and ____________. During chemical digestion, enzymes act like biological ____________ to break down macronutrients.
6. Which accessory organs contribute to digestion? (Check all that apply)
Liver
Pancreas
Gall bladder
Kidneys
Lungs
🥼 Part 3: Digestion Simulation Analysis
7. Based on the classroom digestion experiment, describe what you observed when crackers were mixed with water and vinegar in the zip-lock bag:
8. How did the nylon stockings or coffee filters in the experiment represent the function of the intestines?
9. In the simulation, the vinegar represented:
Saliva
Stomach acid
Bile
Pancreatic juice
🎯 Part 4: Critical Thinking and Application
10. Draw and label a simple diagram of the digestive system, showing the path food takes from ingestion to egestion:
11. Explain how lifestyle factors such as diet and exercise might affect the digestive system:
12. Reflection Question: How would the digestive system be affected if the pancreas stopped functioning? Explain your reasoning:
13. Why is it important that digestion involves both mechanical and chemical processes? Give examples of each:
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