Which of the following is true about ventilation and perfusion in alveoli in an erect posture
Correct Answer: Ventilation/perfusion ratio is maximum at apex
Description: Apical alveoli have low ventilation and perfusion per unit volume of the lung, whereas the basal alveoli have high ventilation and perfusion.
Ventilation-perfusion ratio and the PaO2 is maximum at the apex. PCO2 is maximum at the base.
Category:
Physiology
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