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Triangular area (right atrium, anatomy)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The triangular area of the right atrium is bounded by the:

  • base of the septal leaflet of the tricuspid valve inferiorly
  • anterior margin of the coronary sinus orifice
  • tendon of Todaro anterosuperiorly

Usually, the septal part of the atrioventricular node lies within this region.

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