As a Result of the Way Nerve Impulses Are Propagated

question 1

Multiple Choice

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

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