ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Next to the Bicuspid Valve
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Next to the Pulmonary Valve
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Next to the Aortic Valve
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Next to the Tricuspid Valve
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Detailed explanation-1: -Anatomically, the AV node is located within the triangle of Koch, 2 a region located at the base of the right atrium defined by the following landmarks: the coronary sinus (CS) ostium, tendon of Todaro (tT), and the septal leaflet of the tricuspid valve (TV).
Detailed explanation-2: -Aortic valve and conduction system anatomy Within the right atrium, the AV node is located within the triangle of Koch. This important triangle is demarcated by the tendon of Todaro, the attachment of the septal leaflet of the tricuspid valve, and the orifice of the coronary sinus.
Detailed explanation-3: -The AV node is quite compact ( 1 x 3 x 5 mm). It is located at the center of Koch’s triangle-a triangle enclosed by the septal leaflet of the tricuspid valve, the coronary sinus, and the membranous part of the interatrial septum.