44 



THE SUPERIOR EXTREMITY 



passes downwards and laterally, gives branches to the lower 

 part of the subscapularis, then passes through the angle 



FIG. 16. Dissection to show the General Relations of the Brachial Plexus. 



1. Accessory nerve. 



2. Nerve to levator scapulae. 



3. Levator scapulae. 



4. Dorsal scapular nerve. 



5. Long thoracic nerve. 



6. Scalenus medius. 



7. Suprascapular nerve. 



8. Serratus anterior. 



9. Upper subscapular nerve. 



10. Subscapularis. 



11. Pectoralis minor. 



12. Nerve to coraco-brachialis. 



13. Axillary nerve. 



14. Musculo-cutaneous nerve. 



15. Radial nerve. 



16. Median nerve. 



17. Medial cutaneous nerve of forearm. 



18. Medial cutaneous nerve of arm. 



19. Intercosto-brachial nerve. 



20. Latissimus dorsi. 



21. Thoraco-dorsal nerve. 



22. Long thoracic nerve. 



23. Internal jugular vein. 



24. Superior thyreoid artery. 



25. Submaxillary gland. 



26. External jugular vein. 



27. Scalenus medius. 



28. Upper trunk of brachial plexus. 



29. Middle trunk of brachial plexus. 



30. Kighth cervical nerve. 



31. Omo-hyoid. 



32. Nerve to subclavius. 



33. Lateral anterior thoracic nerve. 



34. Medial anterior thoracic nerve. 



between the thoraco-dorsal and circumflex scapulae arteries 

 and ends in the teres major, which it supplies. 



