atrioventricular node
Quick Summary
The atrioventricular (AV) node is a small mass of specialized tissue located in the right atrioventricular region of the heart. It plays a crucial role in regulating the heart's rhythm by transmitting electrical impulses from the sinoatrial (SA) node to the ventricles.12
Cardiac muscle cells have unique properties, including contractility and rhythmicity, which allow the heart to pump blood efficiently. The coordinated contraction of the atria and ventricles is essential for this process. The AV node, along with the SA node and other conducting tissues, forms an elaborate system that ensures synchronized electrical activity throughout the heart. This electrical signaling, driven by the flow of ions across cell membranes, triggers muscle contractions and maintains the heart's rhythmic beating.34
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cardiovascular diseaseDeterminants of cardiac rhythm…from the atria to the atrioventricular node and bundle of His (known as the atrioventricular junctional tissue), through the bundle branches and Purkinje fibres (known as the ventricular conduction system), and into the ventricular muscle cells that ultimately generate cardiac output. The conduction system in the atria is poorly defined…
Read More…from the atria to the atrioventricular node and bundle of His (known as the atrioventricular junctional tissue), through the bundle branches and Purkinje fibres (known as the ventricular conduction system), and into the ventricular muscle cells that ultimately generate cardiac output. The conduction system in the atria is poorly defined…
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heart…controlled by impulses from the atrioventricular, or A-V, node located at the junction of the two atria. Following contraction, the ventricles relax, and pressure within them falls. Blood again flows into the atria, and an impulse from the S-A starts the cycle over again. This process is called the cardiac…
Read More…controlled by impulses from the atrioventricular, or A-V, node located at the junction of the two atria. Following contraction, the ventricles relax, and pressure within them falls. Blood again flows into the atria, and an impulse from the S-A starts the cycle over again. This process is called the cardiac…
Read More