The sodium channel of the neuron action potential: is the major contributor to the steep depolarizing phase of the waveform, is mechanically gated, is light gated, opens, inactivates, and closes relatively slowly
Added by Montserrat K.
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- The sodium channel is the major contributor to the steep depolarizing phase of the action potential waveform because the rapid influx of Naāŗ ions causes the membrane potential to become more positive quickly. Show moreā¦
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Each of the following is a voltage-gated Na+ channel property EXCEPT A has a voltage sensor helix that controls channel gating. B closes rapidly in absence of stimulus. C can be inactivated by the inactivating particle part of the channel protein. D opens to a variable extent depending on how much the stimulus voltage exceeds the threshold voltage. E opens rapidly when stimulated.
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