Heart model (internal view 1)

 1. Superior vena cava 

  2. Wall of the right atrium

  3. Papillary muscle in right ventricle

  4. Papillary muscle in left ventricle

  5. Interventricular septum

  6. Pulmonary trunk

  7. Ascending aorta

  8. Opening to the inferior vena cava

  9. Pulmonary vein

    Close-Up of Right Heart Chambers

    Close-Up of Left Heart Chambers