Card 20 / 30: Which of the following are true about the propagation of the action potentail down an axon (circle all that apply).
A) increasing axon diameter speeds up propagation
B) increase the number of K+ leak channels speeds up propagation
C) increasing the number of voltage-gated Na+ channels speeds up propagation
D) the myelin sheath primarily increases propagation velocity by decreasing Rm
E) because conduction between nodes is saltatory, eliminating a single node of Ranvier would abolish propagation along the axon

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