The resting membrane potential in a typical nerve cell is approximately
A) +70 mV.
B) -70 mV.
C) +35 mV.
D) -35 mV.
E) 0 mV.

Question

Quizplus · Accepted Answer

The resting membrane potential in a typical nerve cell is approximately -70 mV. This means that the inside of the cell is negatively charged compared to the outside. This negative charge is maintained by the sodium-potassium pump, which pumps three sodium ions out of the cell for every two potassium ions pumped in. This creates an electrochemical gradient that contributes to the resting membrane potential.

The Resting Membrane Potential in a Typical Nerve Cell Is