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Move cursor over region to see name. A Apex of the heart B Interventricular septum I Right auricle (atrium) a Right auricular appendage (auricle) b Left auricular appendage (auricle) III Right Ventricle IV Left Ventricle c Superior vena cava e Triscupid valve f Pulmonary artery i Aorta 2 Papillary muscles 3 Ascending branch of aorta 7 Aortic arch |