Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?

A. Activation gates of Na+ ion channels begin to close.
B. Inactivation gates of Na+ ion channels begin to open.
C. A positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open.
D. K+ ion channels begin to close.
E. Inactivation gates of Na+ ion channels begin to open and a positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open.


C

Anatomy & Physiology

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