For sodium to accumulate rapidly in a neuron,
a. a stimulus above the threshold must open
sodium gates in an accelerating manner.
b. the wave of repolarization must occur to
reestablish a resting potential.
c. there must be a dramatic increase in the negative
charge of the cytoplasm.
d. a voltage surge must cause the sodium gates to
close.
e. the potassium gates must first open.
Answer: a
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