Plate VL— SUPERFICIAL DISSECTION. 



Fore Lime (right), Inner aspect. — i, Subscapularis muscle. 2. Cartilage of prolongation. 3. Supraspinatus muscle. 4. Teres 

 major. 5. Subscapular nerve. 6. Nerve to latissJmus clorsi. 7. Brachial plexus. 8. Subcutaneous thoracic nerve, 9. Suprascapular 

 artery. 10. Subscapular artery (branch oQ 11, Suprascapular nerve. 12. Nerve to teres major. 13. Anterior root of median nerve. 

 14 Circumflex nerve. 15. Posterior root of median nerve. 16. Musculo-spiral nerve. 17. Cut end of axillary artery lying in loop 



connecting the two roots of the median nerve. iS. Artery to latissimus dorsi. 19. Inner tuberosity of humerus. 20. Axillary artery 



continued inferiorly as the brachial. 21. Median nerve. 22. Scapulo-ulnaris muscle (the upper end has been removed to display the 



structures beneath it). 23. Nerve to the biceps muscle. 24. Brachial vein. 25, Prehumeral artery and vein. 26. Deep humeral artery 

 and vein. 27. Coraco-humeralis muscle. 27A. Musculo-cutaneous branch of median nerve. 28. Ulnar nerve (slightly displaced, see heloiv). 

 29. Biceps muscle. 29A. Artery to biceps. 30. Ulnar artery. 31. Cut end of basilic vein (the vein has pierced the posterior superficial 

 pectoral muscle and unites with the posterior radial and ulnar veins to form the lirachial vein). 32. Ulnar vein. 33 and 33A. Posterior 

 radial vein and artery with median nerve between them. 34. Summit of olecranon process of ulna. 35. Flexor metacarpi internus. 



36. Flexor metacarpi medius. 37. Extensor metacarpi magnus. 



The brachial plexus has been pinned down to secure it in position. It is thus flattened out, with the result that the ulnar nerve (which 

 has been drawn slightly backwards with the scapulo-ulnaris muscle) runs down behind, instead of in front of, the musculo-spiral. 



