RESPIRATORY SYSTEM MECHANICS UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

RESPIRATORY SYSTEM MECHANICS UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS

Question:
1. what would be an example of an everyday respiratory event in the ERV button simulates?
Answer:
the ERV button simulates a forced expiration

Question:
2. what additional skeletal muscles are utilized in an ERV activity?
Answer:
abdominal wall muscles and the internal intercostal muscles contract

Question:
3. what was the FEV percentage at the initial radius of 5 mm?
Answer:
the FEV1 percentage at a radius of 5 mm is
73.9%

Question:
4. What happened to the FEV as the radius of the airways was decreased?
Answer:
the FEV decreased proportionally as the radius decreased.

Question:
5. explain why the results from the expiriment suggest that there is an obstructive, rather than a restrictive
pulmonary problem.
Answer:
the FEV decreased proportionally as the radius decreased which is characteristic of an obstructive
pulmonary problem.

Question:
6. What lung valves changed in the spirogram when the patient with emphysema was selected? Why did
these values change as they did?
Answer:
The values that change for the patient with emphysema are ERV, IRV, RV, FVC, FEV1. These changes
are due to the loss of elastic recoil.

Question:
7. Which of these two parameters changed more for the patient with emphysema, the FVC, of the FEV?
Answer:
The FEV decreased significantly more than the FVC for the patient with emphysema.