• 1Right atrium
• 2Left atrium
• 3Right ventricle
• 4Left ventricle
• 5Lung artery
• 6Aorta
• 7Upper and lower vena cava
• 8Lung veins (pulmonary vein)
• 9Sinus node
• 10AV node (atricoventricular node)
• 11Tricuspid valve
• 12Pulmonary valve
• 13Aortic valve
• 14Mitral valve