A right atrial region bounded by the tendon of Todaro, the coronary sinus ostium, and the tricuspid annulus, housing the AV node at its apex; the anatomical substrate for AVNRT given the AV node's dual fast and slow conduction pathways.
Related RCES terms
Study RCES terms in context
Cardiac Codex turns definitions like this into a full study system: 177 lessons, 2,233 practice questions with explanations, blueprint-matched mock exams, and Cardiac Coach — an AI tutor grounded in this exact glossary you can ask from any lesson.
Get early access Back to the glossary →
Cardiac Codex is an independent study tool published by MdoubleA LLC, not affiliated with or endorsed by CCI or any certifying body. This glossary entry is exam-preparation information, not medical advice or a substitute for clinical judgment. Always verify current clinical practice against primary sources and institutional protocol.