Cardiac conduction system

The cardiac conduction system is a network of specialized cells in the heart that control its rhythm. It generates electrical signals that prompt the heart muscles to contract and pump blood. The process begins at the sinoatrial (SA) node, often called the heart's natural pacemaker, which sends signals to the atria, causing them to contract. The signals then travel to the atrioventricular (AV) node and into the ventricles, leading to their contraction. This coordinated process ensures that the heart beats efficiently, maintaining proper blood flow throughout the body.