ESS CELL BIO& NEUROSC F16 : QUIZ 3

ESS CELL BIO& NEUROSC F16 : QUIZ 3 - Quiz3 Part1of1...

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Quiz 3 Return to Assessment List Part 1 of 1 ­ 4.0 Points How does the action potential change as the intensity of the stimulus changes? For example, compare action potentials in pain axons resulting from a little tap of a hammer on the thumb vs. a very hard blow by the hammer on the thumb. A. The action potential does not change but the frequency of action potentials correlate with the intensity of the stimulus so that the more intense stimulus generates a higher action potential frequency B. The action potential shape does not change but the peak of the action potential reaches a lower voltage with the lower stimulus intensity C. The rising phase of action potential corresponds to the intensity of the stimulus so that the more intense stimulus results in a steeper rising phase, that is, the voltage change during the rising phase depolarizes faster D. The action potential shape does not change but its speed along the axon is slower with a lower stimulus intensity Answer Key: A Voltage­gated sodium channels have __________ different conformation states. Which state is most stable depends on ________________________. At the resting membrane potential, the most stable state is ________________ A. two ; membrane potential ; inactivated
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