The Chief Difference Between Plasma and Interstitial Fluid Involves the Concentration

Question

The chief difference between plasma and interstitial fluid involves the concentration of
A) water.
B) electrolytes.
C) nitrogen wastes.
D) proteins.
E) glucose.

Accepted Answer

Plasma contains a higher concentration of proteins, specifically albumin, than interstitial fluid. This is because proteins are too large to cross the walls of capillaries and into the interstitial fluid, but they are found in plasma, which is filtered through capillary walls.

Therefore, the best choice would be D) proteins.