Puffer Fish Poison Blocks Voltage-Gated Sodium Channels Like a Cork

question 37

Multiple Choice

Puffer fish poison blocks voltage-gated sodium channels like a cork. What effect would this neurotoxin haveon the function of neurons?

• A) Neurons would depolarize more rapidly.
• B) Action potentials would lack a repolarization phase.
• C) The absolute refractory period would be shorter than normal.
• D) The axon would be unable to generate action potentials.
• E) None, because the chemically gated sodium channels would still function.

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