Podcast
Questions and Answers
What is the partial pressure of CO2 (PCO2) in dry atmospheric air at sea level (760 mmHg)?
What is the partial pressure of CO2 (PCO2) in dry atmospheric air at sea level (760 mmHg)?
- 40 mmHg
- 0.3 mmHg (correct)
- 760 mmHg
- 46 mmHg
What is the partial pressure of O2 (PO2) in alveolar air saturated with water vapor at 37°C?
What is the partial pressure of O2 (PO2) in alveolar air saturated with water vapor at 37°C?
- 760 mmHg
- 713 mmHg
- 159 mmHg
- 105 mmHg (correct)
Which of the following factors does NOT affect the rate of gas diffusion?
Which of the following factors does NOT affect the rate of gas diffusion?
- Surface area of the respiratory membrane
- Temperature of the gas
- Pressure gradient across the alveolar-capillary membrane
- Molecular weight of the gas (correct)
In which direction does CO2 diffuse faster across the alveolar-capillary membrane?
In which direction does CO2 diffuse faster across the alveolar-capillary membrane?
What is the effect of breathing pure oxygen on the pressure gradient for O2 across the alveolar-capillary membrane?
What is the effect of breathing pure oxygen on the pressure gradient for O2 across the alveolar-capillary membrane?
Which gas has a higher diffusion coefficient (rate of diffusion) across the alveolar-capillary membrane?
Which gas has a higher diffusion coefficient (rate of diffusion) across the alveolar-capillary membrane?
What is the effect of exercise on the surface area of the respiratory membrane?
What is the effect of exercise on the surface area of the respiratory membrane?
What is the relationship between the rate of gas diffusion and the pressure gradient across the alveolar-capillary membrane?
What is the relationship between the rate of gas diffusion and the pressure gradient across the alveolar-capillary membrane?
Which of the following factors has the LEAST effect on the rate of gas diffusion across the alveolar-capillary membrane?
Which of the following factors has the LEAST effect on the rate of gas diffusion across the alveolar-capillary membrane?
What is the relationship between the partial pressure of CO2 (PCO2) in dry atmospheric air and alveolar air?
What is the relationship between the partial pressure of CO2 (PCO2) in dry atmospheric air and alveolar air?
How does the partial pressure of O2 (PO2) in alveolar air compare to the PO2 in capillary blood?
How does the partial pressure of O2 (PO2) in alveolar air compare to the PO2 in capillary blood?
Which of the following is the MAIN factor that determines the rate of CO2 diffusion across the alveolar-capillary membrane?
Which of the following is the MAIN factor that determines the rate of CO2 diffusion across the alveolar-capillary membrane?
How does the rate of CO2 diffusion across the alveolar-capillary membrane compare to the rate of O2 diffusion?
How does the rate of CO2 diffusion across the alveolar-capillary membrane compare to the rate of O2 diffusion?
What is the effect of exercise on the surface area of the respiratory membrane?
What is the effect of exercise on the surface area of the respiratory membrane?
What is the effect of breathing pure oxygen on the pressure gradient for O2 across the alveolar-capillary membrane?
What is the effect of breathing pure oxygen on the pressure gradient for O2 across the alveolar-capillary membrane?
What is the partial pressure of O2 (PO2) in alveolar air saturated with water vapor at 37°C?
What is the partial pressure of O2 (PO2) in alveolar air saturated with water vapor at 37°C?
