triangular area (right atrium, anatomy)
Last reviewed 01/2018
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.
coronary sinus orifice (anatomy)