Quiz
Alveolar Capillary Diffusion
Questions in this quiz (6)
1Regarding the alveolar-capillary diffusion
- AThe atrial pressure of O2 or CO2 in blood is due to the gas that is dissolved in plasma
- BOnce an O2 or CO2 gas molecule binds to hemoglobin it no longer contributes to the partial pressure of the gas
- COnce equilibrium between alveolar and capillary is reached, there is no more diffusion
- DPartial pressure of gas = gas tension
- Eall of the above are correct
2O2 and CO2 are equally the same in solubility
- ATrue
- BFalse
3Diffusion rate - which of the following is not true
- ADirectly proportional to the area, solubility and driving pressure
- BInversely proportional to the thickness or distance
- CLoss of capillaries and alveoli will increase area and decrease distance
- DConcentration difference will affect the driving pressure
4High altitudes can decrease the oxygen pressure gradient --> less O2 will diffuse into the blood because now there's a lower driving pressure
- ATrue
- BFalse
5Diffusion capacity of lung - different gases
- ACO is purely diffusion limited
- BN2O is purely perfusion limited
- CO2 is mixed (mainly perfusion limited)
- Dall of the above are correct
6all of the following will decrease DLCO (diffusion of CO) except?
- Aanemia
- Bpulmonary fibrosis
- Cemphysema
- DPolycythemia
Information
- Description
- Alveolar capillary membrane questions
- Author
- radven
- Language
- English
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- 50
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