When an Action Potential Begins

question 105

Multiple Choice

When an action potential begins

• A) sodium is blocked from leaving the neuron cytoplasm.
• B) sodium is blocked from entering the neuron cytoplasm.
• C) sodium diffuses from the interstitial fluid into the neuron cytoplasm.
• D) sodium diffuses from the neuron cytoplasm into the interstitial fluid.
• E) sodium is actively pumped from the interstitial fluid into the neuron cytoplasm.

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