In a resting neuron:
A) the concentration of potassium ions is about 10 times greater inside the cell than in the extracellular fluid.
B) excitatory postsynaptic potentials hyperpolarize the membrane.
C) voltage-activated sodium channels are pumping sodium inside the cell against its concentration gradient.
D) the membrane is more permeable to sodium than potassium ions.
E) inhibitory postsynaptic potentials depolarize the membrane.

Question

Quizplus · Accepted Answer

In a resting neuron, the concentration of potassium ions is indeed about 10 times greater inside the cell than in the extracellular fluid, which helps maintain the resting membrane potential.

In a Resting Neuron