Which is the Direction of Diffusion of Gases at Capillaries

Question

Which is the direction of diffusion of gases at capillaries near systemic cells?
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.

Accepted Answer

Oxygen diffuses out of the blood into the systemic cells, while carbon dioxide diffuses from the cells into the blood at the capillaries near systemic cells.