Normal Interstitial Fluid Has a PO₂ 40 Mm Hg and PCO₂

Multiple Choice

Normal interstitial fluid has a PO₂ 40 mm Hg and PCO₂ of 45 mm Hg. As a result,

A) both oxygen and carbon dioxide diffuse into the capillaries.
B) both oxygen and carbon dioxide diffuse out of the capillaries.
C) no diffusion occurs.
D) oxygen diffuses out of the capillaries and carbon dioxide diffuses in.
E) oxygen diffuses into the capillaries and carbon dioxide diffuses out.