Oxygen diffusion from the alveolus to the pulmonary capillary occurs because

A. alveolar PO2 is greater than capillary PO2.
B. oxygen diffuses faster than carbon dioxide.
C. alveolar PCO2 is greater than capillary PCO2.
D. alveolar PO2 is less than capillary PCO2.
E. carbon dioxide diffuses faster than oxygen.


A

Anatomy & Physiology

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