The cardiac conduction system is a network of specialized cells in the heart that controls the heartbeat. It generates and transmits electrical impulses, ensuring the heart muscles contract in a coordinated manner. This system includes key components such as the sinoatrial (SA) node, atrioventricular (AV) node, and Purkinje fibers. The SA node, located in the right atrium, acts as the natural pacemaker, initiating each heartbeat. The impulses travel to the AV node, which delays the signal before passing it to the ventricles through the bundle of His and Purkinje fibers. This organized conduction allows for efficient blood flow throughout the body.