The major determinant of the resting potential of all cells is
A) Ca²⁺ concentration in the blood and interstitial fluid.
B) Na⁺ concentration in the blood and interstitial fluid.
C) K⁺ gradient between the blood and interstitial fluid.
D) K⁺ concentration inside cells.
E) Na⁺ concentration inside cells.

Question

Quizplus · Accepted Answer

The resting potential is primarily determined by the K⁺ gradient across the cell membrane, as potassium ions have the highest permeability at rest, influencing the membrane potential significantly.

The Major Determinant of the Resting Potential of All Cells