1. Uniporters are involved in many biological processes, including action potentials in neurons. 2. If the postsynaptic cell is sufficiently depolarized, an action potential will occur. 3. Variation potentials are distinct from action potentials in their cause of stimulation. 4. During the absolute refractory period, a new action potential cannot be elicited. 5. Neurons generate action potentials resulting from changes in the electric membrane potential. 6. Class IB antiarrhythmics decrease action potential frequency by lengthening the repolarization phase. 7. The cardiac action potential differs significantly in different portions of the heart. 8. This decrease in voltage constitutes the falling phase of the action potential . 9. Alt = A plot of action potential ( mV ) vs time. 10. The course of the action potential is determined by two coupled effects.
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