1
.
| Suprascapular nerve |
2
.
| Subscapular nerve |
3
.
| Posterior cord of brachial plexus |
4
.
| Lateral cord of brachial plexus |
5
.
| Anterior lateral thoracic nerve |
6
.
| Upper pointer: Thoracoacromial artery (cut off) Lower pointer: Anterior medial thoracic nerve |
7
.
| Upper pointer: Communicating loop between medial and lateral anterior thoracic nerves Lower pointer: Supreme thoracic artery |
8
.
| Axillary artery and vein |
9
.
| Intercostobrachial nerve |
10
.
| Biceps brachii muscle (short head) |
11
.
| Axillary nerve |
12
.
| Musculocutaneous nerve |
13
.
| Medial and lateral heads of median nerve |
14
.
| Lateral thoracic artery |
15
.
| Lymph vessel |
16
.
| Upper pointer: Subscapular artery (accompanied by subscapular vein) Lower pointer: Teres major muscle (covered by fascia) |
17
.
| Thoracodorsal nerve |
18
.
| Axillary lymph nodes (lateral group) |
19
.
| Long thoracic nerve |
20
.
| Latissimus dorsi muscle |
21
.
| Fascial layer (see text above) |