What is the resting membrane potential of a neuron (in millivolts)?

When a nerve fiber is stimulated,what does the inner surface of the membrane become?

Nerve impulse initiates with the movements of

In a resting neuron,the axonal membrane is

Which of the following statement/s is/are correct with respect to generation and conduction of nerve impulse?
i. The resting potential difference is $-70 \text{ mV}$.
ii. The voltage-gated $Na^{+}$ and $K^{+}$ channels operate together and are self-closing.
iii. At the peak of action potential,the potential difference rises to $+30$ to $+60 \text{ mV}$.
iv. In medullated nerve fibre,the action potential is conducted as a wave of membrane depolarization.
v. The resting potential is maintained by the closure of gated channels of $Na^{+}$ and $K^{+}$.

$A$ neuron becomes an electrically charged cell primarily due to the differential permeability and diffusion of which ion?