Which of the following statements concerning the permeability of a typical nerve cell membrane at rest is true?
A)The permeability to Na ion is very much greater than the permeability to K ion
B)All of the K ion channels in the membrane are open
C)The voltage-gated Na ion channels are inactivated
D)The voltage-gated Na ion channels are closed
E)None of the choices are true

Question

Quizplus · Accepted Answer

At rest, the permeability of the nerve cell membrane to ions is typically greater for potassium (K+) than sodium (Na+). This is because there are more open K+ channels than Na+ channels. The voltage-gated Na+ channels are closed at rest, meaning they are not allowing Na+ ions to cross the membrane.

Which of the Following Statements Concerning the Permeability of a Typical