Tetrodotoxin is a potent neurotoxin. It specifically blocks voltage-gated sodium channels.
Question:
Explain whether or not an action potential would be INITIATED at the dendrite end of a motor neuron exposed to tetrodotoxin.
I think it would because they said it only affected the membrane, sodium channel and dendrites don't have anything to do with that, so it would be INITIATED, but fail when they needed the sodium.
Am I right?
Question:
Explain whether or not an action potential would be INITIATED at the dendrite end of a motor neuron exposed to tetrodotoxin.
I think it would because they said it only affected the membrane, sodium channel and dendrites don't have anything to do with that, so it would be INITIATED, but fail when they needed the sodium.
Am I right?
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You're wrong. It was said to block sodium channels not the membrane. Generating an action potential requires a reversal of the membrane potential of the neuron; the inside becomes flooded with sodium ions. So when the drug blocks those channels, no mass inflow of Na means no action potential