How Does Vasodilation Help When Ventilation Exceeds Perfusion

question 40

Multiple Choice

How does vasodilation help when ventilation exceeds perfusion?

• A) It reduces blood flow to the underventilated alveolus.
• B) It increases O₂ delivery to the overventilated alveolus.
• C) It facilitates the expulsion of excess CO₂.
• D) It decreases the level of CO₂ in the alveolus and the surrounding tissues.
• E) It enables the dilation of bronchiolar smooth muscle.

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