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Exercise 7: Respiratory System Mechanics: Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration Lab
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Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
1. Which of the following statements about surface tension is false?
You correctly answered: c. Surface tension acts to increase the size of the alveoli within the lungs.
2. Which of the following statements about surfactant is false?
You correctly answered: d. Surfactant works by increasing the attraction of water molecules to each other.
3. Just before an inspiration begins, the pressure within the intrapleural cavity
You correctly answered: b. is less than the pressure within the alveoli.
4. The respiratory condition of pneumothorax refers to
You correctly answered: c. any opening that equalizes the intrapleural pressure with the atmospheric pressure.
5. A pneumothorax can lead to
You correctly answered: b. atelectasis.


Post-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1. The addition of surfactant to the lung interior
You correctly answered: c. increased airflow.
2. Opening the valve in the side of the glass bell jar
You correctly answered: d. simulated pneumothorax.
3. In this activity a pneumothorax is automatically followed by
You correctly answered: b. atelectasis.
4. The best way to rapidly reinflate a person's collapsed lung is to
You correctly answered: a. pump air out of the intrapleural space to recreate negative pressure.

very useful thank you :-*

I agree, very useful.

Thank you :)