1
.
| Inferior angle of scapula |
2
.
| Subscapularis muscle |
3
.
| Upper pointer: Axillary nerve Lower pointer: Posterior circumflex artery of humerus |
4
.
| Teres major muscle |
5
.
| Latissimus dorsi muscle (tendon of insertion) |
6
.
| Triceps brachii muscle (long head) |
7
.
| Muscular branches of radial nerve |
8
.
| Posterior brachial cutaneous nerve |
9
.
| Muscular branch of radial nerve |
10
.
| Triceps brachii muscle (medial head) |
11
.
| Musculocutaneous nerve |
12
.
| Joint capsule of humerus |
13
.
| Coracobrachialis muscle |
14
.
| Radial nerve |
15
.
| Brachial artery |
16
.
| Deep brachial artery |
17
.
| Superior ulnar collateral artery |
18
.
| Biceps brachii muscle |
19
.
| Radial artery (anomalous high or from brachial artery) |
20
.
| Muscular branch musculocutaneous nerve |
21
.
| Medial intermuscular septum |
22
.
| Brachialis muscle |
23
.
| Muscular branch brachial artery |