Ventilation perfusion ratio is maximum in_______________?
Correct answer: A. Apex of lung
- A. Apex of lung
- B. Base of lung
- C. Posterior lobe of lung
- D. Middle lobe of lung
Explanation
The apex has relatively greater ventilation-perfusion ratio because perfusion decreases more sharply than ventilation toward the top of the lung. At the base, blood flow increases disproportionately, producing a lower V/Q ratio.
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