Pectoral region and axilla

Left axilla (continued); relations of vessels, nerves and lymphatic structures, close-up view

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Image #90-3

Pectoral region and axilla

Left axilla (continued); relations of vessels, nerves and lymphatic structures, close-up view

The arm has been abducted. The axillary sheath (5) remains on the proximal parts of the axillary artery and vein but has been removed distally.

1. Clavicle
2. Subclavius muscle
3. Coracoclavicular fascia (partially removed)
4. Anterior lateral thoracic nerve
5. Axillary sheath (partially removed)
6. Axillary lymph nodes (subclavian group)
7. Subclavian trunk
8. Axillary lymph nodes (central group)
9. Rib II
10. Intercostobrachial nerve
11. Pectoralis minor muscle (reflected)
12. Coracobrachialis muscle (covered by fascia)
13. Area of confluence of axillary, pectoral and brachial fascia
14. Musculocutaneous nerve
15. Anterior medial thoracic nerve
16. Median nerve
17. Axillary artery and vein
18. Thoracodorsal nerve
19. Axillary lymph nodes (subscapular group)
20. Axillary lymph node (lateral)
21. Long thoracic nerve
22. Fascia of serratus anterior muscle
23. Axillary lymph node (anterior pectoral)