Activity 1: Measuring Respiratory Volumes and Calculating Capacities
Data: Complete the table below.
Chart 1: Respiratory Volumes and Capacities
Radius (mm) Flow (ml/min) TV (ml) ERV (ml) IRV (ml) RV(ml) VC (ml) FEV1(ml) TLC(ml)
Questions: ?answer each question; use full sentences; ask instructor if you need help
1-1: When you forcefully exhale your entire expiratory reserve volume, any air remaining in your lungs is called the residual volume (RV). Why is it impossible to further exhale the RV (that is, where is this air volume trapped, and why is it trapped)?
1-2: How do we measure a person’s RV in a laboratory?
1-3: What would be an example of an everyday respiratory event that the ERV button simulates?
1-4: What additional skeletal muscles are utilized in an ERV activity?
1-5: What was the FEV1 (%) at the initial radius of 5.0 mm?
1-6: What happened to the FEV 1 (%) as the radius of the airways decreased? How well did the results compare with your prediction?
1-7: Explain why the results from the experiment suggest there is an obstructive, rather than a restrictive pulmonary problem.
1-8: What test is used to distinguish between an obstructive and restrictive lung disease?
Summarize: ? write at least two complete sentences on what you observed by doing this experiment – think “big picture”
Quick Reply
