After a Nerve Impulse Occurs,the Neuron Is Temporarily Less Likely

question 45

Multiple Choice

After a nerve impulse occurs,the neuron is temporarily less likely to fire because

• A) the cell is still above its resting level.
• B) potassium ions flow out of the neuron while the ion channels are open.
• C) acetylcholine acts as an inhibitor.
• D) a positive after-potential has occurred.

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