Anatomy Flashcards
What structures of the heart are supplied by the right coronary artery?
The right coronary artery supplies almost the entire right ventricle, as well as the right atrium and a portion of the left atrium. It supplies the posterior one third of the interventricular septum. It also contributes to the supply of the conduction system, including the sinoatrial node and the atrioventricular node.The arterial supply to the diaphragmatic surface of the heart is the most variable in terms of right or left coronary arterial supply. Its supply is related to which vessel is dominant. The term dominant does not refer to the amount of cardiac tissue supplied by the arteries, but from which coronary artery that gives rise to the inferior interventricular artery (aka the posterior descending artery [PDA] or posterior interventricular artery). This artery supplies the diaphragmatic inferolateral wall of the left ventricle. The right coronary artery is dominant in 67% of individuals.
What structures of the heart are supplied by the left circumflex artery?
The circumflex branch contributes to the supply of the left atrium and ventricle, ie the lateral aspect of the heart.
What structures of the heart does the left anterior descending artery (anterior interventricular artery) supply?
The left anterior descending artery (anterior interventricular artery) branch of the left coronary artery supplies the adjacent portions of right and left ventricle. It also supplies the anterior two thirds of the inter ventricular septum as well as the atrioventricular bundle.
