RT Ch. 3 Mechanics Practice Quiz-A

23. At the end of inspiration, what happens to Prs ?

It equals zero

23. During inspiration, what happens to Ppl ?

Decreases

13. What does Pbs stand for?

Body surface pressure

15. What does Pw stand for?

Transthoracic Pressure

13. Which is the formula for Transrespiratory Pressure?

= Pao - PA

7. Functional Residual Capacity (FRC) is the air at the:

end of exhale

23. During inspiration, what happens to PL ?

Increases

15. Which is a reflection of chest wall recoil?

Transthoracic Pressure

13. What does Prs stand for?

Transrespiratory Pressure

7. At FRC, elastic recoil of lung is balanced by the elastic recoil of the chest wall.

True

14. Which determines alveolar volume (lung volume)?

Transpulmonary Pressure

23. During inspiration:

PA drops below Pao

15. Which is the formula for Transthoracic Pressure?

= Ppl - Pbs

13. What does Pao stand for?

Airway opening pressure

14. Which is the formula for Transpulmonary Pressure?

= PA - Ppl

14. Which is the pressure that distends the alveoli?

Transpulmonary Pressure

13. Which causes gas to flow into or out of conducting pathways?

Transrespiratory Pressure

14. What does PL stand for?

Transpulmonary Pressure

13. What does Ppl stand for?

Intrapleural pressure

11. What is the sum of chest wall and lung recoil pressures?

Alveolar (intrapulmonary) pressure

11. What does PA stand for?

Alveolar (intrapulmonary) pressure