🎯 WALT: We Are Learning To

Analyse and evaluate the digestive and respiratory systems, applying knowledge to real-world scenarios

Success Criteria:

✓ I can explain the relationship between digestion and gas exchange
✓ I can analyse system interactions in different scenarios
✓ I can apply knowledge to solve real-world problems

🧠 Part 1: Critical Analysis

1. A marathon runner experiences heavy breathing and increased heart rate during exercise. Explain how the digestive and respiratory systems work together to support this activity.

2. Compare and contrast the surface area adaptations in the small intestine and lungs. Why are these adaptations crucial for their functions?

3. A person has consumed a large meal containing carbohydrates, proteins, and fats. Trace the journey of these nutrients and explain how they eventually support cellular respiration in muscle cells.

4. Scenario Analysis: A student feels dizzy after skipping breakfast and then running to catch the bus. Using your knowledge of body systems, explain what might be happening physiologically.

Low blood glucose affecting brain function

Increased oxygen demand from exercise

Dehydration affecting blood pressure

Reduced carbon dioxide elimination

Justify your selections:

🔬 Part 2: System Integration & Problem Solving

5. Design an investigation to test how different types of physical activity affect breathing rate and digestive processes. Include your hypothesis, method, and predicted results.

Hypothesis: _________________________________________________

Method:

Predicted Results:

6. A person living at high altitude (low oxygen) versus sea level will have different physiological adaptations. Predict and explain three specific changes in their respiratory and circulatory systems.

7. Extension Challenge: Evaluate the statement: "The efficiency of gas exchange directly impacts the rate of cellular respiration, which in turn affects the body's ability to digest and absorb nutrients." Provide evidence to support or refute this claim.

8. Real-World Application: A doctor advises a patient with digestive issues to practice deep breathing exercises. Explain the scientific reasoning behind this advice, considering the connection between the nervous system, stress, and digestion.