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Kylie Fraile P.5 Muscular System - Coggle Diagram

- - - - Depolarization:generation of AP. If end plate causes enough charge to reach critical level THRESHOLD, voltage gated NA channels OPEN. Large influx NA channels Ap unstoppable leads to contraction. AP spreads across s. causes depolarization
        
        **Repolarization: restoration of resting conditions. NA gated channels CLOSE and voltage gated K channels OPEN. K efflux out of cell brings back to resting REFRACTORY PERIOD: muscle fibers cant be stimulated for amount of time. Ionic conditions of rest stored by NA and K