Question

What are the 3 main cardiac potassium currents?

Answer 1

The three main cardiac potassium currents are IK1, IKr, and IKs.

Step-by-step explanation:

The three main cardiac potassium currents are:

1. IK1 (Inward Rectifier Potassium Channel): This current is responsible for maintaining the resting potential of cardiac cells. It helps to stabilize the membrane potential during the diastolic phase.
2. IKr (Rapidly Activating Delayed Rectifier Potassium Channel): This current plays a crucial role in the repolarization phase of the action potential. It helps to restore the resting potential after depolarization.
3. IKs (Slowly Activating Delayed Rectifier Potassium Channel): This current also contributes to the repolarization phase of the action potential. Its activation prolongs the action potential duration.