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    Exam 21: Nerve Cells
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    During an Action Potential,which Happens First
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During an Action Potential,which Happens First

Question 18

Question 18

Multiple Choice

During an action potential,which happens first?


A) opening of voltage-gated Na⁺ channels
B) closing of voltage-gated Na⁺ channels
C) opening of voltage-gated K⁺ channels
D) closing of voltage gated K⁺ channels

Correct Answer:

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