The terminal bouton of an axon releases a neurotransmitter that affects a postsynaptic receptor, causing the opening of Na* channels. Which of the following is true concerning the neurotransmitter's effect on action potentials? It doesn't matter where the synapse occurred on the postsynaptic neuron, because the influence is all-or-none. That is, it does not weaken over distance. The farther the synapse is from the axon hillock, the greater is its influence on causing an action potential. In order for a neurotransmitter to influence an action potential, it must affect both a Na* and K* channel simultaneously. Activity at one synapse will have no effect on the postsynaptic neuron's likelihood of sending an action potential. O The closer the synapse is to the axon hillock, the greater is its influence on causing an action potential.

The terminal bouton of an axon releases a neurotransmitter that affects a postsynaptic receptor, causing the opening of Na* channels. Which of the following is true concerning the neurotransmitter's effect on action potentials? It doesn't matter where the synapse occurred on the postsynaptic neuron, because the influence is all-or-none. That is, it does not weaken over distance. The farther the synapse is from the axon hillock, the greater is its influence on causing an action potential. In order for a neurotransmitter to influence an action potential, it must affect both a Na* and K* channel simultaneously. Activity at one synapse will have no effect on the postsynaptic neuron's likelihood of sending an action potential. O The closer the synapse is to the axon hillock, the greater is its influence on causing an action potential.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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