12. Membrane Potential Shifts & Action Potential Big Picture

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8 Terms

1
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What term describes membrane potential becoming less negative?
Depolarization
2
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Which ion enters the cell to cause depolarization?
Sodium (Na+)
3
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What term describes membrane potential returning to RMP?
Repolarization
4
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Which ion exits the cell to cause repolarization?
Potassium (K+)
5
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What is the abbreviation for resting membrane potential?
RMP
6
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What term describes membrane potential becoming more negative than RMP?
Hyperpolarization
7
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What ion movement causes hyperpolarization?
Excess potassium loss
8
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What are the three main events of neuronal signaling?
1. Local potential, 2. Action potential, 3. Propagation