Which of the following accounts for the flow of oxygen into the alveoli?

A) Hemoglobin transports the O2 into the alveoli.
B) Myoglobin transports the O2 into the alveoli.
C) The O2 pressure in the alveoli is higher than that in the inhaled air.
D) The O2 pressure in the alveoli is lower than that in the inhaled air.


D

Environmental & Atmospheric Sciences

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