= Cardiac transient outward potassium current
{wiki=Cardiac_transient_outward_potassium_current}
The cardiac transient outward potassium current, often abbreviated as I_to, is a significant ionic current that plays a critical role in the electrical activity of cardiac myocytes (heart muscle cells). This current is primarily characterized by its transient nature, meaning that it is activated and deactivated quickly during the action potential of cardiac cells. \#\#\# Key Features of I_to: 1. **Ion Movement**: I_to primarily involves the movement of potassium ions (K+) out of the cardiac cells.
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