| 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 |
