Crux cordis explained

The crux cordis or crux of the heart (from Latin "crux" meaning "cross") is the area on the lower back side of the heart where the coronary sulcus (the groove separating the atria from the ventricles) and the posterior interventricular sulcus (the groove separating the left from the right ventricle) meet.^[1] It is important surgically because the atrioventricular nodal artery, a small but vital vessel, passes in proximity to the crux of the heart.^[2] It is the anastomotic point of right and left coronary artery.

Notes and References

1. Magherini . Andrea . Azzolina . Gaetano . Careri . Jeanine . February 1984 . Anatomy of the echocardiographic crux cordis in the evaluation of the spectrum of atrioventricular valve atresia . International Journal of Cardiology . 5 . 2 . 163–172 . 10.1016/0167-5273(84)90140-2 . 6698643 . 0167-5273.
2. Vieira . T. H. M. . Moura . P. C. . Vieira . S. R. C. . Moura . P. R. . Silva . N. C. . Wafae . G. C. . Ruiz . C. R. . Wafae . N. . 2008-03-01 . Anatomical indicators of dominance between the coronary arteries in swine . Morphologie . en . 92 . 296 . 3–6 . 10.1016/j.morpho.2008.04.005 . 18501658 . 1286-0115.