| 1
.
| Clavicle (cut across) |
| 2
.
| Brachial plexus |
| 3
.
| Subclavian artery and vein |
| 4
.
| Pectoralis major muscle (clavicular part, cut across) |
| 5
.
| Rib I (intact) |
| 6
.
| Internal thoracic artery |
| 7
.
| Line of reflection of mediastinal pleura onto lung |
| 8
.
| Branches left upper pulmonary vein |
| 9
.
| Pectoralis major muscle (sternal part, cut off) |
| 10
.
| Costal cartilage ill (cut across) |
| 11
.
| Transversus thoracis muscle (cut across) |
| 12
.
| Costomediastinal recess |
| 13
.
| Mediastinal pleura (pointer indicates location of phrenic nerve in its course across left border of heart and pericardium) |
| 14
.
| Lobule of fat |
| 15
.
| Costodiaphragmatic recess |
| 16
.
| Rib III (cut off) |
| 17
.
| Cupula pleurae |
| 18
.
| Aortic arch (covered by pleura) |
| 19
.
| Left pulmonary artery (filled with blue latex) |
| 20
.
| Left main bronchus |
| 21
.
| Left inferior pulmonary vein |
| 22
.
| Thoracic aorta (covered by pleura) |
| 23
.
| Pulmonary ligament |
| 24
.
| Costal pleura |
| 25
.
| Diaphragm |
| 26
.
| Rib X (periosteum removed) |
