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Your cardiac conduction system contains specialized cells and nodes that control your heartbeat. It also helps your heart speed up when you need more blood and oxygen or slow down when it’s time to rest.ĭiagram of the cardiac conduction system What are the parts of the cardiac conduction system? Ideally, the electrical conduction system keeps up a steady, even heart rate. These contractions control how blood flows through your heart.

The electrical signals that travel through your heart conduction system cause your heart to expand and contract. How does electrical conduction perform with the rest of your heart? Your heart conduction system sends out thousands of signals per day to keep your heart beating.

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These steps make up one full contraction of your heart muscle.

The Purkinje fibers to your ventricles (bottom heart chambers), causing them to contract.The bundle of His (center bundle of nerve fibers), carrying the signal to the Purkinje fibers.The atrioventricular (AV) node, delaying the signal until your atria are empty of blood.Your atria (top heart chambers), telling them to contract.This electrical signal is like electricity traveling through wires to an appliance in your home. It starts when your sinoatrial (SA) node creates an excitation signal. For each heartbeat, electrical signals travel through the conduction pathway of your heart. Your heart is a pump that sends blood through your body. What are the steps of the heart conduction pathway?