What Happens When Ventilation Exceeds Perfusion in the Lungs

question 31

Multiple Choice

What happens when ventilation exceeds perfusion in the lungs?

• A) The CO₂ level in the alveolus and surrounding tissue increases.
• B) The O₂ level in the alveolus decreases.
• C) The bronchiolar smooth muscles contract.
• D) The pulmonary arteriole constricts.
• E) The air flow to the overventilated alveolus increases.

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