The Cardiac Muscle Action Potential EXPLAINED

The video tutorial explains the cardiac muscle action potential, starting with the resting membrane potential and the role of gap junctions in electrical conduction. It details the depolarization process, highlighting the opening of sodium channels and the rapid change in membrane potential. The plateau phase is discussed, emphasizing the balance of calcium and potassium ions. The concept of calcium-induced calcium release is introduced, explaining its role in muscle contraction. Finally, the repolarization phase is covered, focusing on the closure of calcium channels and the removal of calcium to allow muscle relaxation.

What is the resting membrane potential of a cardiomyocyte?

How does the influx of sodium ions affect the membrane potential?

Discuss the role of potassium channels during the action potential.

What mechanisms are involved in the removal of calcium from the cytoplasm?