The conduction system of the heart is a specialized network of nodes and fibers that generate and transmit electrical impulses, allowing the heart to beat in a coordinated rhythm. This ensures efficient pumping of blood throughout the body. 🫀 Main Components of the Conduction System: 1. Sinoatrial (SA) Node – “The pacemaker of the heart” • Location: Right atrium (near the opening of the superior vena cava). • Function: Initiates electrical impulses that set the heart rate (normally 60–100 bpm).

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The heart beats with perfect rhythm — thanks to its own electrical conduction system. It starts at the sinoatrial (SA) node — the heart’s natural pacemaker — which generates impulses that spread through the atria. The signal slows at the atrioventricular (AV) node, then travels through the bundle of His, down the bundle branches, and into the Purkinje fibers, triggering coordinated ventricular contraction. This animation highlights the heart’s conduction system in motion. Based on SciePro’s 3D a