Health, 20.04.2020 20:36 tammydbrooks43
An action potential moves along an axon due to the sequential opening of voltage-gated Na+ channels. The diagram below shows voltage-gated Na+ channels separated by a short distance in the plasma membrane of an axon. Initially (left panel), only channel (a) is open. Within a very short time (right panel), channel (b) also opens. A diagram of two panels with an arrow between them showing Na plus ions outside a cell and inside a cell, separated by a plasma membrane with two Na plus channels labeled (a) and (b). In the first panel, the (a) channel is open and ions flow from outside to inside the cell. In the second panel, both channels are open. Which statement correctly describes what causes the second voltage-gated Na+ channel to open?
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An action potential moves along an axon due to the sequential opening of voltage-gated Na+ channels....
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