G-protein gated inwardly repairing potassium (GIRK) currents or other record currents Provided these features regarding SAN electrophysiology, the opening from potassium channels normally lead in 2 means. In the first action potential repolarisation will likely be expidited attenuating the new share of action possibility to the brand new duration size which means that potentially broadening heartrate. On the other hand an increase in potassium conductance during the slow diastolic depolarization increase the utmost diastolic possible and slow the rate out of pacemaker depolarization resulting in a more sluggish heartbeat. The exact websites share relies on the features of potassium most recent. Whether your current predominates in the asleep membrane possible, such as for example with inwa...