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Collection of specialized cardiac muscle cells
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- The atrioventricular node (also known as the AV node) is a collection of specialized cardiac muscle cells, which are bundled together to form a node within the wall of the interatrial septum.
Oct 30, 2023 · The atrioventricular node (also known as the AV node) is a collection of specialized cardiac muscle cells, which are bundled together to form a node within the wall of the interatrial septum.
- Conduction System
The atrioventricular (AV) bundle (of His) is the initial...
- Conduction System
- What Is The Av node?
- What Does The Av Node do?
- Clinical Significance
- A Word from Verywell
The AV node is a tiny "button" of specialized cells (roughly 3 by 5 millimeters in diameter) located near the center of the heart. It is on the right side of the atrial septum at the junction of the atria and the ventricles. Its job is to help coordinate the contraction of the atria and the ventricles in response to the heart’s electrical signal.
The AV node controls the passage of the heart’s electrical signal from the atria to the ventricles. After an electrical impulse is generated by the sinus node(located at the top of the right atrium), it spreads across both atria, causing these chambers to beat. The AV node then "gathers" that electrical impulse and, after a brief delay, allows it t...
Without this brief delay in the electrical impulse, the atria would not be able to finish beating—allowing the ventricles to completely fill with blood—before the ventricles themselves begin to beat. Unlike other parts of the heart’s electrical system, the more frequently the AV node is stimulated by electrical impulses, the slower it conducts elec...
The AV node is a very important part of the heart’s electrical system. It transmits the heart’s electrical signal from the atrium to the ventricle, optimizes the coordination of each heartbeat, and, if atrial fibrillation occurs, protects the ventricles from being bombarded with a dangerous number of electrical signals. Disorders of the AV node can...
The atrioventricular node or AV node electrically connects the heart's atria and ventricles to coordinate beating in the top of the heart; it is part of the electrical conduction system of the heart. [1]
Jul 25, 2023 · The atrioventricular (AV) node is a small structure in the heart, located in the Koch triangle, near the coronary sinus on the interatrial septum. In a right-dominant heart, the atrioventricular node is supplied by the right coronary artery.
- Joseph Heaton, Amandeep Goyal
- 2023/07/25
Apr 24, 2023 · Atrioventricular Node. After the electrical impulses spread across the atria, they converge at the atrioventricular node – located within the atrioventricular septum, near the opening of the coronary sinus.
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Jul 18, 2019 · Atrioventricular (AV) Node. The atrioventricular node lies on the right side of the partition that divides the atria, near the bottom of the right atrium. When the impulses generated by the SA node reach the AV node, they are delayed for about a tenth of a second.
Aug 17, 2023 · The atrioventricular (AV) bundle (of His) is the initial segment of the AV node that penetrates through the fibrous trigone into the membranous part of the interventricular septum. On transverse section at the level of the fibrous body, the AV bundle may appear oval, quadrangular or triangular.
