| 1
.
| Internal jugular vein |
| 2
.
| Anterior scalene muscle |
| 3
.
| Jugular trunk |
| 4
.
| Subclavian artery |
| 5
.
| Phrenic nerve |
| 6
.
| Subclavian vein (cut off) |
| 7
.
| Subscapularis muscle |
| 8
.
| Rib II |
| 9
.
| Long thoracic nerve |
| 10
.
| Serratus anterior muscle |
| 11
.
| Upper pointer: Cervical nerve V Lower pointer: Cervical nerve VI |
| 12
.
| Cervical nerve VII |
| 13
.
| Cervical nerve VIII |
| 14
.
| Suprascapular nerve |
| 15
.
| Transverse scapular artery |
| 16
.
| Lateral cord of brachial plexus |
| 17
.
| Branch axillary artery (to subscapularis muscle) |
| 18
.
| Coracoid process of scapula |
| 19
.
| Axillary nerve |
| 20
.
| Musculocutaneous nerve |
| 21
.
| Upper pointer: Coracobrachialis muscle Lower pointer: Anterior circumflex artery of humerus |
| 22
.
| Posterior circumflex artery of humerus |
| 23
.
| Axillary artery (note anomalous bifurcation a short distance distal to pointer. The lateral branch continues as the radial artery, the medial branch as the brachial artery) |
| 24
.
| Radial nerve |
| 25
.
| Thoracodorsal nerve |
| 26
.
| Median nerve |
| 27
.
| Biceps brachii muscle |
| 28
.
| Ulnar nerve |
| 29
.
| Middle antibrachial cutaneous nerve |
| 30
.
| Thoracodorsal artery |
| 31
.
| Teres major muscle |
| 32
.
| Latissimus dorsi muscle |
