Question

Drugs that alter the permeability of the plasma membrane of a neuron, have which of the following effects on nerve impulse conduction?

• A. They prevent movement of sodium and potassium ions into and out of the cell, thereby stopping transmission of the impulse
• B. They primarily affect conduction along the axon
• C. They prevent the release of neurotransmitters at synapses
• D. All of the above

Answer 1

The correct option is D All of the above

Drugs that alter the permeability of the plasma membrane of a specific neuron have the ability to alter the perception of stimulus and works at the synapse region or at the axon region and regulates the entry and exit of the ions during the transmission. They prevent movement of sodium and potassium ions into and out of the cell, thus they stop transmission of the impulse. They prevent the release of neurotransmitters at the synpase too, thus affect the conduction along the axon. Hence, the correct option is “d”.