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Which structure is highlighted?

Multiple Choice left posterior ventricular artery left anterior ventricular artery posterior interventricular artery left atr

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Answer #1

Posterior interventricular artery

The posterior interventricular artery of the heart is a branch of the right coronary artery. It branches off on the inferior surface of the heart within the atrioventricular groove. It enters the posteroinferior aspect of the interventricular groove and heads towards the apex of the heart.The posterior interventricular artery (posterior descending artery - PDA) is a branch of the right coronary artery. It is also commonly referred to as the inferior interventricular branch. This artery runs in the posterior (inferior) interventricular sulcus. Its main function is to supply the diaphragmatic (inferior) surface of the myocardium and interventricular sulcus of the heart.

The posterior interventricular artery can arise from either the left or right coronary artery. The "dominant" coronary artery is the one that gives rise to PDA. In the majority of the population the right system is dominant meaning that this irrigates the heart’s diaphragmatic (inferior) surface.

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