Axis Scientific 3-Part Heart (3x Life-Size) A-105182 12 - Ligamentum Arteriosum 03 - Superior Vena Cava 01 - Right Atrium 13 - Left Pulmonary Artery 21 - Left Ventricle 20 - Left Atrium 26 - Ascending Aorta 27 - Interatrial (Opening) 18 - Left Pulmonary Septum Vein 11 - Pulmonary Trunk 06 - Fossa Ovalis 32 - Great 07 - Opening of the Cardiac Vein 23 - Mitral Valve 02 - Right Auricle Coronary Sinus 08 - Opening to 09 - Right Ventricle 34 - Circumflex Artery Right Ventricle 22 - Anterior 19 - Left Auricle 15 - Tricuspid Valve Papillary Muscle 10 - Cardiac Muscle 21 - Left Ventricle 09 - Right Ventricle 39 - Anterior Interventricular Vein 16 - Anterior Papillary Muscle 33 - Anterior Interventricular Artery 14 - Right Pulmonary Vein 04 - Inferior Vena Cava 28 - Interventricular Septum 38 - Small Cardiac Vein 05 - Pectinate 36 - Coronary Sinus Muscle of the Right Auricle 35 - Posterior Vein of the Left Ventricle 31 - Posterior Interventricular 37 - Middle Artery Cardiac Vein 24 - Aortic Valve 29 - Right Coronary 17 - Left Atrium Artery 18 - Left Pulmonary 30 - Right Vein Marginal Artery 25 - Pulmonary Valve 32 - Great Cardiac Vein 10 - Cardiac Muscle 34 - Circumflex 13 - Left Artery Pulmonary 11 - Pulmonary 12 - Ligamentum Artery 39 - Anterior Trunk Arteriosum Interventricular 19 - Left Vein Auricle 21 - Left Ventricle 01 - Right Atrium 21 - Left Ventricle 02 - Right Auricle 22 - Anterior Papillary Muscle 03 - Superior Vena Cava 23 - Mitral Valve 04 - Inferior Vena Cava 24 - Aortic Valve 05 - Pectinate Muscle of the Right Auricle 25 - Pulmonary Valve 06 - Fossa Ovalis 26 - Ascending Aorta 07 - Opening of the Coronary Sinus 27 - Interatrial Septum 08 - Opening to Right Ventricle 28 - Interventricular Septum 09 - Right Ventricle 29 - Right Coronary Artery 10 - Cardiac Muscle 30 - Right Marginal Artery 11 - Pulmonary Trunk 31 - Posterior Interventricular Artery 12 - Ligamentum Arteriosum 32 - Great Cardiac Vein 13 - Left Pulmonary Artery 33 - Anterior Interventricular Artery 14 - Right Pulmonary Vein 34 - Circumflex Artery 15 - Tricuspid Valve 35 - Posterior Vein of the Left Ventricle 16 - Papillary Muscle 36 - Coronary Sinus 17 - Left Atrium 37 - Middle Cardiac Vein 18 - Left Pulmonary Vein 38 - Small Cardiac Vein 19 - Left Auricle 39 - Anterior Interventricular Vein 20 - Left Atrium (Opening) © 2017 AXIS SCIENTIFIC.