<prompt> RMP of the neuron is-700 V- 7 V-170 mV-70 mV  <response>: Resting membrane potential RMP - It is the potential difference between inside and outside of the membrane of a cell at a resting state.RMP is maintained by K ion. The value for RMP varies for different kinds of tissues.RMP of various tissues are given below RMP of a neuron is: -70 mV, RMP of cardiac muscle: 90 mV, RMP of skeletal muscle: -90 mV, RMP of smooth muscle: -50 mV. Note: RMP is maintained by K ion. RMP is close to isoelectric, the potential of Cl Changes in the external K concentration affect the RMP Changes in the external Na concentration affect the action potential and not the RMP 