Drugs that alter the permeability of the plasma membrane of a neuron have which of the follow-ing effects on nerve impulse conduction?

Options

A. They prevent movement of sodium and potassium ions into and out of the cell, thereby stopping the transmission of the impulse.
B. They primarilyaffect conduction along the axon.
C. They prevent the release of neurotransmit-
ters at synapses.
D. All of the above