Which of the Following Statements Accurately Describe Events That Occur

Multiple Choice

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.