13 SCIATIC NERVE - time C The potential would be flipped in polarity D The second phase of the potential would disappear What would happen if we

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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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What is the cause of the changes 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. D. Activation of a Na-K pump.
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What would happen to the potential we record if we reversed the inputs to the differential amplifier? A. The potential would be abolished B. The potential would be shifted to the right in time C. The potential would be flipped in polarity D. The potential would be conducted more rapidly down the nerve
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What would happen if we crushed the nerve between the two RECORDING electrodes? A. The potential would be abolished B. The potential would be shifted to the right in
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Unformatted text preview: time C. The potential would be flipped in polarity D. The second phase of the potential would disappear What would happen if we crushed the nerve between the STIMULATING and RECORDING electrodes? A. The potential would be abolished B. The potential would be shifted to the right in time C. The potential would be flipped in polarity D. The second phase of the potential would disappear How could one determine the velocity of an action potential? A. Attach a speedometer to the action potential. B. Measure how long it takes an action potential to travel a given distance. C. Measure the speed at which the action potential reaches its peak D. Measure the duration of the action potential. You saw that your stimulator could produce “twin” pulses; the interval between the pulses was controlled by the delay control. How could you use this to determine the refractory period of the axons?...
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This note was uploaded on 11/10/2008 for the course BIO 206L taught by Professor Unknown during the Spring '08 term at University of Texas at Austin.

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13 SCIATIC NERVE - time C The potential would be flipped in polarity D The second phase of the potential would disappear What would happen if we

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