Dissection of breast and anterolateral thoracic wall

Anterior thoracic wall, internal aspect

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Image #116-1

Dissection of breast and anterolateral thoracic wall Anterior thoracic wall, internal aspect All of the thoracic viscera have been removed except those structures which pass through the superior thoracic aperture (thoracic inlet). The pleura and the endothoracic fascia have been excised anteriorly. 1 . Vertebra Th. III (pointer on posterior longitudinal ligament) 2 . Left subclavian artery 3 . Phrenic nerve 4 . Intercostal nerve 5 . Upper pointer: Esophagus (cut off) Lower pointer: Trachea (cut off) 6 . Recurrent laryngeal nerve 7 . Aortic arch 8 . Costal cartilage II 9 . Body of sternum (covered by sternal membrane) 10 . Upper pointers: Internal thoracic veins Lower pointer: Internal thoracic artery 11 . Anterior intercostal branch internal thoracic artery 12 . Sternal branches internal thoracic artery 13 . Costal pleura 14 . Sternal part of diaphragm 15 . Pericardium 16 . Rib II 17 . Right subclavian vein 18 . Rib I 19 . Sternothyroid muscle 20 . Vagus nerve right 21 . Superior vena cava (cut off) 22 . Ascending aorta 23 . Azygos vein (cut off) 24 . Vertical fascial bands related to transversus thoracis muscle 25 . Right internal thoracic artery 26 . Left internal thoracic vein 27 . Innermost intercostal muscle 28 . Transversus thoracis muscle 29 . Diaphragm