Which statement about neuronal membranes is false?
A) Resting neurons are more permeable to potassium than to any other ion.
B) The sodium-potassium pump keeps the concentration of potassium higher inside than outside the cell.
C) Open chloride channels are largely responsible for the resting membrane potential of neurons.
D) Membrane potentials tend toward the equilibrium potential of the ion to which the membrane is most permeable.
E) The sodium-potassium pump expels sodium ions from inside the cell.

Question

Quizplus · Accepted Answer

The statement that open chloride channels are largely responsible for the resting membrane potential of neurons is false. Instead, resting membrane potential is largely due to the permeability of the membrane to potassium ions, which are more permeable than any other ion at rest. The sodium-potassium pump keeps potassium concentrations higher inside the cell, and membrane potentials tend toward the equilibrium potential of the ion to which the membrane is most permeable. The pump expels sodium ions from inside the cell, which contributes to the negative resting membrane potential.

Which Statement About Neuronal Membranes Is False