Which of the following statements concerning the permeability of a typical neuron membrane at rest is true? A)The permeability to Na⁺ is much greater than the permeability to K⁺. B) All of the K⁺ channels in the membrane are open. C)The voltage-gated Na⁺ channels are in the inactivated state. D)Most of the voltage-gated Na⁺ channels are in the closed state. E)There is equal permeability to Na⁺ and K⁺.

Question

Quizplus · Accepted Answer

At rest, most voltage-gated Na+ channels are in the closed state, and some may be in the inactivated state. The permeability to K+ is higher than that of Na+ at rest, but not all K+ channels are necessarily open. Therefore, option D is the correct choice.

Which of the Following Statements Concerning the Permeability of a Typical