Cell volume (and therefore cell function)in most cells is dependent upon careful regulation of
A) volume of extracellular fluid.
B) blood pressure.
C) osmolarity of extracellular fluid.
D) permeability of cell membranes.
E) resting membrane potential.

Question

Quizplus · Accepted Answer

Cell volume is dependent upon the osmolarity of the extracellular fluid. This is because the movement of water across the cell membrane is driven by differences in solute concentration between the inside and outside of the cell. If the concentration of solutes (osmolarity) outside the cell is higher than inside, water will move out of the cell and the cell will shrink. If the concentration of solutes outside the cell is lower than inside, water will move into the cell and the cell will swell. Therefore, careful regulation of extracellular osmolarity is necessary to maintain proper cell volume and function.

Cell Volume (And Therefore Cell Function)in Most Cells Is Dependent