Oxygen moves from blood into the interstitial fluid and then to body cells because it
A) diffuses from a region of higher partial pressure to a region of lower partial pressure.
B) diffuses from a region of lower partial pressure to a region of higher partial pressure.
C) descends down an osmotic gradient, following the movement of water.
D) diffuses from a higher to a lower pH.

Question

Quizplus · Accepted Answer

Oxygen moves from an area of higher partial pressure (in the blood) to an area of lower partial pressure (in the interstitial fluid and then to body cells) through the process of diffusion.

Oxygen Moves from Blood into the Interstitial Fluid and Then