Once a pre-synaptic neuron has stopped firing, all of the following will stop the local potential in the post-synaptic neuron except: the neurotransmitter must diffuse away the neurotransmitter spontaneously dissolves the neurotransmitter is taken back up by the pre-synaptic neuron the neurotransmitter is destroyed in the synapse

Once a pre-synaptic neuron has stopped firing, all of the following will stop the local potential in the post-synaptic neuron except: the neurotransmitter must diffuse away the neurotransmitter spontaneously dissolves the neurotransmitter is taken back up by the pre-synaptic neuron the neurotransmitter is destroyed in the synapse

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 3TAHL

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Excitatory neurons A and B both synapse with neuron C. Neuron A releasesa neurotransmitter, and neuron B releases the same type and amount ofneurotransmitter plus a neuromodulator that produces EPSPs in neuron C.Action potentials produced in neuron A alone can result in action potentialproduction in neuron C. Action potentials produced in neuron B alone alsocan cause action potential production in neuron C. Which results in moreaction potentials in neuron C, stimulation by only neuron A or stimulationby only neuron B? Explain.
Which of the following is true about the conduction of action potentials? a. Thicker axons are faster because there is more surface area on thicker axons. b. Myelin speeds conduction because the glial cells add voltage gated Na+ channels to the neuron. c. Diffusion of Na+ ions between the Nodes of Ranvier happens faster than the wave of opening and closing membrane proteins can travel. d. Neurons that don’t have myelin sheaths undergo saltatory conduction e. Action potentials move slowly.
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