The Intrapleural Pressure Is Always Less Than the Alveolar Pressure

question 4

Multiple Choice

The intrapleural pressure is always less than the alveolar pressure because

• A) Airway resistance slows down air movem ent into and out of the lungs
• B) The chest wall always tends to expand at all lung volumes
• C) The lungs tend to pull away from the chest wall at all lung volumes
• D) The respiratory muscles tug on the chest at all times
• E) Otherwise we wouldn’t have these cool sucking gun shot wounds in the movies where only the bad guys die instantly and the heros get to say goodbye

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