The substance most responsible for maintaining the colloid osmotic pressure is
a. intravascular plasma proteins. c. extracellular sodium.
b. intracellular potassium. d. interstitial potassium.
A
Osmotic pressure is created by solutes and other substances (e.g., albumin, globulin, fibrinogen) suspended in fluid. Colloid osmotic pressure is created primarily by the presence of plasma proteins in the intravascular space. Plasma proteins exert a pull on water molecules and therefore produce osmotic pressure, which retains fluid within the intravascular compartment.
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