As a result of the way nerve impulses are propagated, they are unidirectional. Which of the following does NOT contribute to this phenomenon?
A)Unidirectional sodium and potassium channels open only toward the axon of the nerve cell.
B)Presynaptic neurotransmitters and postsynaptic receptors are separated.
C)Sensory processes are oriented in such a manner that the information is targeted to the dendrites of the nerve cell.
D)The time interval encompassed by the refractory period does NOT allow the impulse to travel in reverse.
E)none of the above

Question

Quizplus · Accepted Answer

The unidirectional nature of nerve impulses is not due to unidirectional sodium and potassium channels, as these channels open in response to voltage changes and are not inherently directional. The other options contribute to the unidirectional propagation of nerve impulses.

As a Result of the Way Nerve Impulses Are Propagated