Which is TRUE about typical,resting neurons?
A)The plasma membrane is most permeable to sodium ions.
B)The concentration of sodium ion is greater inside the cell than outside.
C)The permeability of the plasma membrane to potassium ions is much greater than its permeability to sodium ions.
D)The plasma membrane is completely impermeable to sodium ions.
E)The plasma membrane is completely impermeable to potassium ions.

Question

Quizplus · Accepted Answer

Resting neurons have a higher permeability to potassium ions compared to sodium ions. This is due to the presence of more potassium leak channels in the plasma membrane of the neuron. Additionally, the concentration of potassium ions is higher inside the cell compared to outside, which creates an electrochemical gradient that drives the efflux of potassium ions out of the cell. The efflux of potassium ions also contributes to the negative resting membrane potential of the neuron.

Which Is TRUE About Typical,resting Neurons