In a Resting Neuron

question 41

Multiple Choice

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.

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