Thoracic viscera in situ

Anterior view of thoracic contents, rib cage removed

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Image #116-3

Thoracic viscera in situ Anterior view of thoracic contents, rib cage removed Both upper limbs have been detached. The upper nine ribs have been removed bilaterally with the exception of the first rib on the left. The manubrium and most of the body of the sternum have also been removed. The pleural cavities have been opened. On the right the apex of the lung is visible within the cupula of the pleura. 1 . Phrenic nerve 2 . Vagus nerve 3 . Right brachiocephalic vein (cut off) 4 . Fascia surrounding thymus 5 . Upper lobe right lung 6 . Pleura (cut along costomediastinal reflections) 7 . Middle lobe right lung 8 . Inferior lobe right lung 9 . Pleural fold 10 . Xiphoid process 11 . Sheath of rectus abdominis muscle (lamina posterior) 12 . Linea alba 13 . Rectus abdominis muscle 14 . Sheath of rectus abdominis muscle (lamina anterior) 15 . Thyroid cartilage 16 . Left internal jugular vein 17 . Thyroid gland 18 . Trachea 19 . Thymus 20 . Upper lobe left lung 21 . Internal thoracic artery 22 . Pericardium (covered by mediastinal pleura) 23 . Anterior mediastinal cavity 24 . Costal cartilage VI 25 . Diaphragm (covered by diaphragmatic pleura) 26 . Pleura (cut along costodiaphragmatic reflection)