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Author Question: The time available for diffusion in the lung is mainly a function of which of the following? a. ... (Read 34 times)

abc

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The time available for diffusion in the lung is mainly a function of which of the following?
 
  a. Functional residual capacity (FRC)
  b. Inspired O2 concentration
  c. Level of VA
  d. Rate of pulmonary blood flow

Question 2

Carbon dioxide diffuses across the alveolar-capillary membrane approximately how many times faster than O2?
 
  a. 10
  b. 20
  c. 30
  d. 40



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CAPTAINAMERICA

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Answer to Question 1

ANS: D
The diffusion time in the lung depends on the rate of pulmonary blood flow.

Answer to Question 2

ANS: B
Carbon dioxide diffuses approximately 20 times faster across the alveolar-capillary membrane than does O2, because of its much higher solubility in plasma.





 

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