nerve impulse

• At resting potential there is positive charge on the outside of the membrane and negative charge on the inside,with high sodium ion concentration outside and high potassium ion concentration inside.

FIRST ACTION POTENTIAL

• when stimulated,voltage-dependent sodium ions channels open,and sodium ions flow into the axon,depolarising the membrane. Localised electric currents are generated in the membrane.sodium ions move to the adjacent polarised region causing a change…