| Play selected steps of the dissection. Choose reduced size for slower connections. |
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| 1. Define the boundaries of the superior mediastinum and peel away the mediastinal pleura. |
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| 2. Strip the pericardium from the thoracic cavity and identify the parts of the aortic arch, ligamentum arteriosm, pulmonary trunk, trachea, and bronchi. |
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| 3. Remove the lungs. |
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| 4. Clean and dissect the structures of the superior mediastinum, including the great vessels and remnants of the thymus. |
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| 5. Explore the tracheal bifurcation and the main (primary) bronchi. |
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| 6. Examine the surfaces and hilum of the lung. |
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| 7. Dissect the bronchi, defining the lobar branches. Identify the lymph nodes involved in lymphatic drainage of the lungs. |
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| 8. Identify the vagus nerves as they pass posterior to the roots of the lungs; examine the esophagus throughout its length. |
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| 9. Identify the branches of the descending thoracic aorta. |
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| 10. Identify the azygos system of veins. |
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| 11. Identify the thoracic duct. |
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| 12. Clean and identify the sympathetic trunks and their branches. |
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