Pericardial sac

Myocardium

Left atrium

Right Atrium

Left ventricle

Right ventricle

Interventricular septum

Auricles

Superior venae cavae

Inferior venae cavae

Pulmonary veins

Pulmonary artery

Pulmonary trunk

Aorta

Aorta

Left atrioventricular (bucuspid) valve

Right atrioventricular (tricuspid) valve

Aortic semilunar valve

Pulmonary semilunar valve

Chordae tendinae

Papillary muscles

Trabeculae carnae

Fossa ovalis

oval depression in interatrial septum; marks site of opening in fetal heart called foramen ovale

Ligamentum arteriosum

found between pulmonary trunk and aorta; cordlike remnant of fetal ductus arteriosus

Coronary cardiac circulation arteries

Coronary cardiac circulation

Posterior interventricular sulcus

Anterior interventricular sulcus

Coronary sulcus

-groove/depression encircling heart anteriorly and posteriorly
-separates atria from ventricles