The Inactivation Rate of Voltage-Gated Na⁺ and K⁺ Channels Can

question 25

Multiple Choice

The inactivation rate of voltage-gated Na⁺ and K⁺ channels can regulate the firing frequency of neurons. Which of the following combinations results in the highest firing frequency?

• A) Rapid inactivation of both Na⁺ and K⁺ channels
• B) Rapid inactivation of Na⁺ channels, slow inactivation of K⁺ channels
• C) Slow inactivation of Na⁺ channels, rapid inactivation of K⁺ channels
• D) Slow inactivation of both Na⁺ and K⁺ channels

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