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
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Chapter1: The Human Body: An Orientation
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Transcribed Image Text: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.
The closer the synapse is to the axon hillock, the greater is its influence on
causing an action potential.
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