13 SCIATIC NERVE 2009 - Action Potential Generation and...

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Action Potential Generation and Conduction in the Frog Sciatic Nerve
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Threshold Shapes and timing of the action potentials Conduction of the action potential Components within the compound action potential Refractory period/Faithfulness of conduction
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Diagram the experiment
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What is a “nerve”?
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A NERVE is a bundle of axons. Most commonly they extend from the brain or spinal cord to the periphery.
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Axons are the long, cylindrical processes extended by neurons A Motor Neuron A Sensory Neuron
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Where are the neurons that contribute axons to our nerves?
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Action potential (nerve impulse): the brief regenerative signal conducted along axons that is the basis of communication within the nervous system.
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What is the cause of the change in membrane potential during an action potential? A. An entry of K followed by an exit of Na. B. An entry of - ions followed by an exit of + ions. C. An entry of Na followed by an exit of K.
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