What do elictric currents have to do with the heart?

Electric currents play a crucial role in the functioning of the heart. The heart's rhythmic contractions are regulated by electrical impulses generated in the sinoatrial (SA) node, which initiate each heartbeat and coordinate the contraction of heart muscle cells. These electrical signals propagate through the heart's conduction system, ensuring that the heart beats in a synchronized manner to effectively pump blood throughout the body. Disruptions in these electrical currents can lead to arrhythmias or other cardiac issues.