Which of the following statement is wrong regarding conduction of nerve impulse?
1
In a resting neuron, the axonal membrane is more permeable to K+ ions and nearly impermeable to Na+ ions.
2
Fluid outside the axon has high concentration of Na+ and low concentration of K+ in a resting neuron.
3
Ionic gradients and maintained by Na-K pumps across the resting membrane which transport 3Na+ ions outwards for 2K+ ions into the cell.
4
A neuron is polarised only when the outer surface of the axonal membrane possess a negative charge and its inner surface is positively charged.