Pectoral region and axilla

Left axilla (continued); relations of arteries, veins and nerves, close-up view

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Image #91-3

Pectoral region and axilla

Left axilla (continued); relations of arteries, veins and nerves, close-up view

The trunks (5,6,7), cords (24) and various branches of the brachial plexus are shown in relation to the subclavian (9,10) and axillary (14) vessels.

1. Upper pointer: levator muscle of scapula Lower pointer: Dorsal nerve of scapula
2. Branch of long thoracic nerve
3. Serratus anterior muscle
4. Superficial transverse artery
5. Upper trunk
6. Middle trunk
7. Lower trunk (91-4 pertain to the supraclavicular part of brachial plexus)
8. Phrenic nerve (lying upon anterior scalene muscle)
9. Subclavian artery
10. Subclavian vein
11. Subclavian trunk
12. Rib I
13. Tendon of origin of subclavius muscle
14. Axillary artery and vein
15. External intercostal muscle
16. Supraspinatus muscle
17. Clavicle
18. Acromioclavicular ligament
19. Coracoclavicular ligament
20. Coracoacromial ligament
21. Upper pointer: Suprascapular nerve Lower pointer: Transverse scapular artery
22. Subscapular nerve
23. Coracoid process of scapula
24. Upper pointer: Posterior cord Middle pointer: Lateral cord Lower pointer: Middle cord (together these are infraclavicular parts of the brachial plexus)
25. Axillary nerve
26. Musculocutaneous nerve
27. Radial nerve
28. Coracobrachialis muscle
29. Median nerve