Action potentials depend on sodium (Na ) ions being more highly concentrated outside a neuron and potassium (K ) ions being more concentrated inside a neuron. However, Hodgkin and Huxley determined that there is pressure for Na ions to move into a resting neuron and pressure for K ions to move out of a resting neuron and that these ions actually leak across the membrane. How do neurons counteract this leaking and maintain the imbalance between these ions