1
.
| Sternocleidomastoid muscle |
2
.
| Clavicular part pectoralis major muscle (cut across) |
3
.
| Sternocostal part of pectoralis major muscle (cut across) |
4
.
| Upper pointer: Abdominal part pectoralis major muscle (cut across) Lower pointer: Sheath of rectus abdominis muscle |
5
.
| Supraclavicular nerves |
6
.
| Axillary vein |
7
.
| Anterior thoracic nerve |
8
.
| Remnant of pectoral fascia |
9
.
| Pectoralis major muscle (reflected laterally) |
10
.
| Pectoralis minor muscle |
11
.
| Rib II |
12
.
| Body of sternum |
13
.
| Pectoral fascia (at former position of lateral border of pectoralis major) |
14
.
| Serratus anterior muscle |
15
.
| Lateral cutaneous branch intercostal nerve VII |