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Author Question: Where do most aerosol particles in the 1- to 5-m range deposit? a. Alveoli b. Bronchioles c. ... (Read 70 times)

Chelseaamend

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on: Jul 16, 2018
Where do most aerosol particles in the 1- to 5-m range deposit?
 
  a. Alveoli
  b. Bronchioles
  c. Central airways
  d. Upper airways

Question 2

Which of the following techniques will increase aerosol deposition by sedimentation in the lungs?
 
  a. High inspiratory flow
  b. Short inspiratory time
  c. 10-sec breath-hold
  d. Short expiratory time


Kdiggy

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Sedimentation occurs mostly in the central airways and increases with time, affecting particles down to 1 m in diameter.

Answer to Question 2

ANS: C
A 10-sec breath-hold can increase aerosol deposition as much as 10 and increase the ratio of aerosol deposited in lung parenchyma to central airway by four-fold.


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