| 1
.
| Trachea |
| 2
.
| Aortic arch |
| 3
.
| Superior vena cava |
| 4
.
| Pericardium |
| 5
.
| Ascending aorta |
| 6
.
| Left superior pulmonary vein (note anterior intersegmental branches to upper lobe) |
| 7
.
| Pulmonary trunk |
| 8
.
| Upper pointer: Left auricle Lower pointer: Latex cast in left inferior pulmonary vein at entrance into left atrium) |
| 9
.
| Left atrium (interior visible through openings cut in wall) |
| 10
.
| Right atrium |
| 11
.
| Left ventricle |
| 12
.
| Right ventricle |
| 13
.
| Internal thoracic artery |
| 14
.
| Left phrenic nerve |
| 15
.
| Apex of lung |
| 16
.
| Left superior intercostal vein (not tributary accompanying left phrenic nerve) |
| 17
.
| Anterior mediastinal lymph node |
| 18
.
| Apical branch left pulmonary artery |
| 19
.
| Posterior apical segmental bronchus (apical subsegmental branch) |
| 20
.
| Anterior lateral branch left pulmonary artery |
| 21
.
| Upper pointer: Anterior segmental bronchus Lower pointer: Lingular branch superior left pulmonary artery |
| 22
.
| Anterior descending branch left pulmonary artery |
| 23
.
| Branches superior lingular bronchi |
| 24
.
| Intersegmental vein |
| 25
.
| Upper lobe left lung |
| 26
.
| Oblique fissure |
| 27
.
| Lingula of left lung |
| 28
.
| Lower lobe left lung |
