Which of these statements correctly describes the resting membrane potential? A)It is much closer to the equilibrium potential for Na⁺ than to the equilibrium potential for K⁺. B)It is much closer to the equilibrium potential for K⁺ than to the equilibrium potential for Na⁺. C) It is the same as the equilibrium potential for Cl^-. D) It refers to the presence of Na⁺ inside the cell.

Question

Quizplus · Accepted Answer

The resting membrane potential is generated by the unequal distribution of ions across the membrane. The equilibrium potential for K+ plays a major role in determining the resting membrane potential. At rest, the membrane potential is much closer to the equilibrium potential for K+ than for Na+. Therefore, choice B is the correct statement. Choice A is incorrect because the resting membrane potential is not closer to the equilibrium potential for Na+. Choice C is incorrect because the resting membrane potential is not the same as the equilibrium potential for Cl-. Choice D is incorrect because the resting membrane potential refers to the overall membrane potential, not just the presence of Na+ inside the cell.

Which of These Statements Correctly Describes the Resting Membrane Potential