The Cardiomyocyte Action Potential [Part 1]: The Action Potential Graph

The video explains the action potential in heart muscle cells, focusing on the phases of depolarization, plateau, and repolarization. It distinguishes between pacemaker potentials and cardiomyocyte action potentials, emphasizing the role of sodium, potassium, and calcium channels. The plateau phase is crucial for effective blood ejection from heart chambers. The video also clarifies that the action potential is a cellular event, distinct from an electrocardiogram, and occurs in all heart cells during a cardiac cycle.

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