Q Question Completion Status:

ONE word ONLY The electrical charge on the inside and outside surfaces of the neuron membrane changes as seen above.

Column $1$ is showing

showing

In Column $2Na+$ ions

In Column $3$ potential ; column $2$ and $3$ are showing

potential and column $4$ is is reversed by the action of $Na+-K+$ ATPase.

$($enter or leave$)$ the cell via

$-$gated K$+$ channels are open, so K$+$ ion:

diffusion.

$($enter or leave$)$ the cell.

QUESTION $8$