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Question

Intrapulmonary pressure is the ________.


A

pressure within the pleural cavity

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B

pressure within the alveoli of the lungs

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C

negative pressure in the intrapleural space

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D

difference between atmospheric pressure and respiratory pressure

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Solution

The correct option is B

pressure within the alveoli of the lungs


Intrapulmonary pressure is the pressure within the lungs.This pressure varies between inspiration and expiration. During inspiration intrapulmonary pressure becomes less than atmospheric pressure, and during expiration it becomes greater than atmospheric pressure.


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