Dissection of pericardium and heart in situ

Heart and great vessels

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Image #117-1

Dissection of pericardium and heart in situ Heart and great vessels The thymus has been removed and structures deeper in the superior mediastinal region have been freed of their connective tissue coverings. The pericardial sac has been opened more widely. 1 . Middle scalene muscle 2 . Thyrocervical trunk 3 . Vagus nerve right 4 . Superior cardiac branch vagus nerve 5 . Brachiocephalic trunk 6 . Upper pointer: Left brachiocephalic vein Lower pointer: Right internal thoracic vein (cut off) 7 . Phrenic nerve 8 . Superior vena cava 9 . Pericardium (reflected) 10 . Right auricle 11 . Right ventricle 12 . Pericardium 13 . Body of sternum (cut across) 14 . Trachea 15 . Common carotid artery 16 . Inferior thyroid vein (cut off) 17 . Upper pointer: Internal thoracic vein Lower pointer: Internal thoracic artery 18 . Thymic vein 19 . Ascending aorta (covered by serous layer of pericardium) 20 . Pericardiacophrenic vein 21 . Conus arteriosus 22 . Left ventricle 23 . Apex of heart