Posterior descending artery
Encyclopedia
The posterior interventricular artery (PIV) (or posterior descending artery (PDA)) is an artery running in the posterior interventricular sulcus to the apex of the heart
where it meets with the anterior interventricular artery.
It is typically a branch of the right coronary artery
(80%, known as right dominance). Alternately, the PIV can be a branch of the circumflex coronary artery (20%, known as left dominance) which itself is a branch of the left coronary artery
.
Variants have been reported.
Apex of the heart
The apex of the heart is the lowest superficial part of the heart.It is directed downward, forward, and to the left, and is overlapped by the left lung and pleura.-External anatomy:...
where it meets with the anterior interventricular artery.
It is typically a branch of the right coronary artery
Right coronary artery
The right coronary artery originates above the right cusp of the aortic valve. It travels down the right atrioventricular groove, towards the crux of the heart.At the origin of the RCA is the conus artery....
(80%, known as right dominance). Alternately, the PIV can be a branch of the circumflex coronary artery (20%, known as left dominance) which itself is a branch of the left coronary artery
Left coronary artery
The left coronary artery, abbreviated LCA and also known as the left main coronary artery , arises from the aorta above the left cusp of the aortic valve.-Branching:...
.
Variants have been reported.
