Network inside your heart that makes it beat: The heart's network of nerves is a complex system that controls the rate and rhythm of your heartbeats. This network, often referred to as the "cardiac conduction system," is composed of specialized cells that conduct electrical impulses. It starts with the heart's natural pacemaker, which sends electrical signals causing the heart to contract and pump blood. Ideally, the electrical conduction system keeps up a steady, even heart rate. It also helps

Cardiac conduction system and its relationship with ECG | Davidson's Principles and Practice of Medicine