Which is the direction of diffusion of gases at the alveoli of the lungs?
A) oxygen into blood , carbon dioxide into blood
B) oxygen out of blood , carbon dioxide into blood
C) oxygen into blood , carbon dioxide out of blood
D) oxygen out of blood , carbon dioxide out of blood
E) None of these answer choices are correct.

Question

Quizplus · Accepted Answer

Oxygen diffuses from the alveoli into the blood, while carbon dioxide diffuses from the blood into the alveoli.

Which Is the Direction of Diffusion of Gases at the Alveoli