Why Are Action Potentials Usually Conducted in Only One Direction

question 37

Multiple Choice

Why are action potentials usually conducted in only one direction along an axon?

• A)The nodes of Ranvier can conduct potentials in only one direction.
• B)The brief refractory period prevents reopening of voltage-gated Na+ channels.
• C)The axon hillock has a higher membrane potential than the terminals of the axon.
• D)Ions can flow along the axon in only one direction.
• E)Voltage-gated channels for both Na+ and K+ open in only one direction.

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