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Which statement correctly describes what causes the second voltage-gated Na plus channel to open?
Wiki User
∙ 12y ago
After the first channel opens, the movement of many types of ions (both inside and outside the cell) alters the distribution of charges near the second channel, causing it to open.
Wiki User
∙ 12y ago
The second voltage-gated Na+ channel opens due to the membrane potential of the neuron becoming further depolarized beyond its threshold level. This depolarization causes a change in the conformation of the channel's protein subunits, allowing the flow of Na+ ions into the neuron.
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