Measuring Lung Capacity Lab Page 3
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3Figure 1:
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Relationship Between Balloon Diameter (cm) and Lung Volume (cm
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e*1:*Relationship*Between*Balloon*Diameter*(cm)*and*Lung*Volume*(cm
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Figure 1: Relationship Between Balloon Diameter (cm) and Lung Volume (cm
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Balloon Diameter in Centimeters (cm)
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Discussion Questions: Answer the following using complete sentences.
lusion:*Answer&the&following&using*complete*sentences.&
1. Compare/contrast your results with the average values.
1. Compare/contrast&your&results&with&the&average&values.&(2&marks)&
2. Which person would be more physically fit - an individual with a normal expiratory reserve volume and
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extremely high vital capacity, or an individual with an extremely high expiratory reserve volume and a
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rather normal vital capacity? Explain the reasoning behind your choice.
3. Identify 2 sources of error in this investigation.
4. Suggest at least two changes for improving the accuracy of your results in this investigation. (How can
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you reduce sources of error?)
2. Which&person&would&be&more&physically&fit&Y&an&individual&with&a&normal&expiratory&reserve&volume&
and&extremely&high&vital&capacity,&or&an&individual&with&an&extremely&high&expiratory&reserve&volume&
5. Not everyone has the same lung capacity. Besides the male/female difference, explain two reasons why
and&a&rather&normal&vital&capacity?&Explain&the&reasoning&behind&your&choice.&(2&marks)&
lung capacities might be different between individuals (consider their environment, activities, health, etc.)
Lab Quiz Date: ____________________________________________
You should be familiar with the following:
• Procedure of the lab
• Calculations, including interpolation of the graph
• Physiology of breathing terms (e.g. vital capacity, tidal volume) and how to calculate each value
• Discussion questions
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