A neurotoxin was delivered to a patient that prevented sodium channels from opening at the axon level. How does this affect a neuron's ability to communicate to other neurons? Explain in terms of...

A neurotoxin was delivered to a patient that prevented sodium channels from opening at the axon level. How does this affect a neuron's ability to communicate to other neurons? Explain in terms of action potential conductance, and neurotransmitter exocytosis at the axon terminal.