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Thoracic cavity, lung removed, right view. 1 Diaphragm; 2–4 Heart: 2 Left ventricle, 3 Right ventricle; 4 Right atrium; 5 Caudal vena cava; 6 Right azygous vein, enlarged; 7 Trachea; 8 Tracheal bronchus; 9 Division of the Chief bronchus into Caudal and Middle bronchus; 10 Oesophagus; VI 6th rib.
