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The PDA supplies the posterior third of the interventricular septum. The remaining anterior two-thirds is supplied by the left anterior descending artery, which is a branch of left coronary artery. It is typically a branch of the right coronary artery (70%, known as right dominance).
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]
posterior interventricular artery (mostly) SA nodal artery (in 60%) Right marginal artery; Left coronary artery. anterior interventricular. septal; diagonal; circumflex.
The circumflex artery ends at the point where it joins to form to the posterior interventricular artery in 15% of all cases, which lies in the posterior interventricular sulcus. In the other 85% of all cases the posterior interventricular artery comes out of the right coronary artery. [3]
Proximal: starting at RCA origin, spanning half the distance to the acute margin [6] [7]; Middle: from proximal segment to the acute margin [6] [7]; Distal: from middle segment to origination point of the posterior interventricular artery, where the posterior interventricular sulcus meets the atrioventricular groove on the base of the heart.
They can be known as subsinosal interventricular groove or paraconal interventricular groove respectively. It is located on the diaphragmatic surface of the heart [1] [2] near the right margin. [2] It extends between the coronary sulcus and the (notch of [2]) apex of the heart. It contains the posterior interventricular artery and middle ...
The posterior interventricular artery, a branch of right coronary artery, supplies the posterior 1/3 of the interventricular septum. The remaining anterior 2/3 is supplied by the anterior interventricular artery, which is a septal branch of the left anterior descending artery, which is a branch of left coronary artery. [2]
The coronary sinus drains through the posterior wall of right atrium at the orifice of the coronary sinus. [ 6 ] [ 1 ] This orifice is located at the posteroinferior aspect of the right atrium, just medial [ 1 ] and to the left of the orifice of inferior vena cava , [ 6 ] and between the inferior vena cava and the right atrioventricular orifice ...