The Thorax

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Diagram of a transverse section of the thorax. Labels: 1, anterior mediastinum; 2, internal mammary vessels; 3, triangularis sterni muscle; 4, right phrenic nerve between pleura and pericardium; 5, left phrenic nerve between the pleura and pericardium; 6, thoracic duct in posterior mediastrinum; 7, esophagus with left vagus in front and right vagus behind; 8, vena azygos major; 9, thoracic aorta giving off intercostal arteries; 10, gangliated cord of sympathetic; R.V., right ventricle; R.A., right auricle of heart in middle mediastinum; P.A., pulmonary artery; A., aorta; C., vena cava superior; V. dorsal vertebra.


Miller, F. E.; Hunt, H. L.; McCormick, F.J.; Burr, B.; & King, M.L. Domestic Medical Practice: A Household Adviser in the Treatment of Diseases, Arranged for Family Use (Chicago: Domestic Medical Society, 1919) 50


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