How a neuron maintain a resting potential.?

Question

a little diagram will be helpful

Answer 1

All cells, not just neurons, have a resting potential (that is, a difference in charge between the inside and the outside of the cell). It is due to the differential distribution of charged ions, especially sodium (Na) and potassium (K). These ions tend to leak (Na into, and K out of the cell, down their concentration gradients). However, the cell maintains the resting potential by a special pump, the Na/K ATPase. It moves three Na out and two K in (against their concentration gradients) by using the energy from ATP.

Answer 2

there is an unequal distribution of ions across the membrane which is the primary cause of the RMP. as the opposite charges are electrically attracted they for a thin layer of charge along the membrane, -ve in the cell ans +ve outside. it is maintained because of the ' differential permeability' of the ions, membrane is more permeable to k+ and as the conc. of the K+ is higher inside there is a tendency for its efflux, hence +ve charge goes out leaving behind the non-diffusable protein anions, making the membrane more -ve inside. since permeability of the membrane to the Na+ is low not as many Na+ ions are influxed maintaining the potential. also if the Na+ ions come in and disrupt the polarity as in after an action potential, the Na+-K+ atpase pump kicks in to restore the RMP.

sorry couldn't load the diagram.all the best.