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Multiple Choice: Chapter 6 Conduction of action potentials Question 6.1 Which of the following is true about the conduction of action potentials? A thicker axons conduct action potentials faster because there is a faster current flow in thicker axons B action potentials travel faster in unmyelinated nerve fibres than myelinated nerve fibres C the action potential in myelinated axons is generated only at the nodes of Ranvier D the action potential in an unmyelinated nerve has an amplitude that declines with distance from its site of origin