Action Potentials Travel Down Axons Because _______

question 43

Multiple Choice

Action potentials travel down axons because _______.

• A) sensory signals stimulate axons at many points along their lengths
• B) potassium moves rapidly down the length of the axon,triggering action potentials as it does so
• C) sodium moves rapidly down the length of the axon,triggering action potentials as it does so
• D) positive sodium ions entering the neuron at one spot trigger an action potential at a neighboring spot on the membrane
• E) positive potassium ions entering the neuron at one spot trigger an action potential at a neighboring spot on the membrane

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