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Unformatted text preview: External Concentration (mM) Na + 3.6 109 K + 124 23.0 Make some kind of smirking comment about the resting potential in this case. 3) Assume the thing below is a piece of axon. First of all, it is not to scale. I think you can get past that. Assume a reasonable constant of proportionality between axon diameter and the space constant (maybe something like 3000 or there abouts). Draw the voltage waveform that appears as a function of length as an action potential travels down the axon. What about if something horrible happens and this axon gets demyelinated such that the conductance across the membrane gets quadrupled? 100 nm soma 0 mm 2 mm 4 mm-2 mm...
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- Spring '09