Normal interstitial fluid has a of 40 mm Hg and 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.
About how much of the oxygen content of arterial blood consists of oxygen molecules in solution?
Active tissues receive approximately ________ as much O2 as inactive tissues.
Most of the carbon dioxide transported by the blood (approximately 70%)is
A)dissolved in plasma.
B)bound to hemoglobin.
C)transported as bicarbonate ions in the plasma.
D)bound to the same protein as carbon dioxide.
E)carried by white blood cells.