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Question

If the membrane potential becomes more negative than the RMP, the membrane is called

A
depolarized
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B
repolarized
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C
polarized
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D
hyperpolarized
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Solution

The correct option is D hyperpolarized
If the membrane potential becomes more negative than the resting membrane potential or RMP, the membrane is called hyperpolarized. Following the repolarization, there may be a hyperpolarization phase, during which the membrane potential temporarily becomes more negative than the RMP.
During depolarization, the negative membrane potential becomes less negative, reaches 0 and then becomes positive.
During repolarization, the membrane potential is restored to the RMP value of -70mV.

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