HEART CONDUCTION SYSTEM Meaning and
Definition
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The heart conduction system refers to a complex network of specialized cells and tissues in the heart that is responsible for initiating and coordinating the electrical signals that regulate the heartbeat. It ensures the synchronized contraction and relaxation of the heart's chambers, making it possible for the heart to effectively pump blood throughout the body.
At the core of the heart conduction system is the sinoatrial (SA) node, often called the heart's natural pacemaker. Located in the right atrium, the SA node generates electrical impulses that set the pace of the heartbeat. These impulses then travel through the atria, causing them to contract and push blood into the ventricles.
Next, the electrical signals reach the atrioventricular (AV) node, situated between the atria and ventricles. The AV node acts as a gatekeeper, briefly delaying the transmission of the electrical signals to allow the atria to fully empty their blood into the ventricles before they contract. From the AV node, the impulses pass through specialized fibers called bundle branches and Purkinje fibers, ultimately stimulating the ventricles to contract, effectively pumping blood out of the heart.
By efficiently coordinating the electrical signals, the heart conduction system plays a fundamental role in maintaining a steady and rhythmic heartbeat, ensuring adequate blood circulation throughout the body.
Common Misspellings for HEART CONDUCTION SYSTEM
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