Tetrodotoxin Is a Toxin That Blocks Voltage-Gated Sodium Channels

Multiple Choice

Tetrodotoxin is a toxin that blocks voltage-gated sodium channels.What effect does this substance have on the function of neurons?

A) Neurons depolarize more rapidly.
B) Action potentials lack a repolarization phase.
C) The absolute refractory period is shorter than normal.
D) The neuron is not able to propagate action potentials.
E) The toxin does not interfere with neuron function because the voltage-regulated sodium channels would still function.