When a neuron is at rest,
A) there is a voltage difference across the membrane of about + 70 millivolts.
B) the interior is positively charged.
C) it is responding to a stimulus.
D) the fluid outside the membrane has more sodium and less potassium than the cytoplasm.
E) axons are firing at a faster rate.

Question

Quizplus · Accepted Answer

When a neuron is at rest, the fluid outside the membrane has more sodium ions and less potassium ions compared to the cytoplasm inside the neuron. This creates a resting membrane potential, typically around -70 millivolts, with the interior being negatively charged relative to the outside.

When a Neuron Is at Rest