How Does the Passive Spread of Current Ahead of the Active

question 49

Multiple Choice

How does the passive spread of current ahead of the active region of a nerve fiber contribute to action potential propagation?

• A) It provides directionality to the propagation of the action potential.
• B) It changes the speed at which the action potential propagates.
• C) It causes a new segment of the cell membrane to be depolarized to threshold.
• D) It allows the action potential to propagate only along a portion of the nerve fiber.
• E) It promotes action potential attenuation.

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