Which of the following statement/s is/are cor | vedclass

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(D) Statement $i$ is correct: The resting membrane potential is typically $-70 	ext{ mV}$.Statement $ii$ is incorrect: Voltage-gated $Na^{+}$ and $K^

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i,iii and v only

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(D) Statement $i$ is correct: The resting membrane potential is typically $-70 	ext{ mV}$.Statement $ii$ is incorrect: Voltage-gated $Na^{+}$ and $K^{+}$ channels operate independently (sequentially) and are self-closing.Statement $iii$ is correct: During the peak of an action potential,the membrane potential reaches $+30$ to $+60 	ext{ mV}$.Statement $iv$ is incorrect: In medullated nerve fibres,the action potential undergoes saltatory conduction,jumping from one node of Ranvier to the next,rather than traveling as a continuous wave of depolarization.Statement $v$ is correct: The resting potential is maintained by the selective permeability of the membrane and the closure of voltage-gated $Na^{+}$ and $K^{+}$ channels.Therefore,statements $i, iii,$ and $v$ are correct.

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