The Time Constant for the Decay of Whole-Cell Sodium Current

question 12

Multiple Choice

The time constant for the decay of whole-cell sodium current is different than the time course of single sodium channel inactivation. Why?

• A) The sodium current depends on the probability of sodium channel activation.
• B) The time course for sodium channel inactivation is longer than the sodium current.
• C) The sodium current decays more slowly because of leak channels.
• D) The sodium current decay depends on the time course of sodium channel inactivation.
• E) The sodium current decays more rapidly as more sodium channels inactivate.

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