11. It gradually returns to resting potential and is ready for another action potential to occur. 12. Without this negative resting potential , cardiac cells cannot repolarize ( prepare for their next contraction ). 13. After a cell has established a resting potential , that cell has the capacity to undergo depolarization. 14. On the other hand, the high resting potential in undifferentiated cells can be a metabolic advantage. 15. They are always very close to their respective concentrations when the membrane is at their resting potential . 16. Stretching GI muscles can affect the resting potentials of ICC and affect the frequency of pacemaker activity. 17. Such effects include nerve synapses and cardiac beat as well as the resting potential of a somatic cell. 18. As a result, the difference between resting potential and threshold potential is increased and firing is less likely. 19. The resting potential prior to the action potential is typically " 90mV, somewhat more negative than typical neurons. 20. As potassium moves out of the cell the potential within the cell plummets and approaches its resting potential once more.
