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Author Question: Which of the following pressure gradients is responsible for the actual flow of gas into and out of ... (Read 68 times)

mpobi80

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on: Jul 16, 2018
Which of the following pressure gradients is responsible for the actual flow of gas into and out of the lungs during breathing?
 
  a. Transcanadian pressure gradient (Ppc  Pks)
  b. Transpulmonary pressure gradient (Palv  Ppl)
  c. Transrespiratory pressure gradient (Palv  Pao)
  d. Transthoracic pressure gradient (Ppl  Pbs)

Question 2

Which of the following pressures normally remains negative (relative to atmospheric pressure) during quiet breathing?
 
  a. Palv
  b. Ppl
  c. Pao
  d. Pbs


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mbcrismon

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

ANS: C
The transrespiratory pressure gradient causes gas to flow into and out of the alveoli during breathing.

Answer to Question 2

ANS: B
Pleural pressure (Ppl) is usually negative (i.e., sub-atmospheric) during quiet breathing.


mpobi80

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

momolu

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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