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Author Question: Where is Raw highest in the airway of the human body? a. Terminal bronchioles b. Carina c. Left ... (Read 80 times)

appyboo

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on: Jul 16, 2018
Where is Raw highest in the airway of the human body?
 
  a. Terminal bronchioles
  b. Carina
  c. Left lower lobe
  d. Nose, mouth, and large airways

Question 2

Which of the following causes gas to flow into and out of the alveoli during breathing?
 
  a. Transrespiratory system pressure (PTR)
  b. Intrapleural pressure (Ppl)
  c. Transpulmonary pressure (PTP)
  d. Transmural pressure (Ptm)


qytan

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

ANS: D
Approximately 80 of the resistance to gas flow occurs in the nose, mouth, and large airways, where flow is mainly turbulent. Only about 20 of the total resistance to flow is attributable to airways smaller than 2 mm in diameter, where flow is mainly laminar.

Answer to Question 2

ANS: A
Transrespiratory pressure (PTR) gradient causes gas to flow into and out of the alveoli during breathing.


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