9 6 



THE SUPERIOR EXTREMITY 



Supra- clavicular Branches. 



Long Thoracic Nerve (of Bell), C. 5, 6, and 7. 

 Dorsalis Scapulae (Nerve to Rhomboids), C. 5. 

 Nerve to Subclavius, C. 5 and 6. 

 Supra-scapular, C. 5 and 6. 



Infra- clavicular Branches. 



( Lateral Anterior Thoracic (C. 5, 6, and 7). 

 Lateral Cord -! Lateral Head of Median (C. 5, 6, and 7). 

 { Musculo-Cutaneous (C. 5, 6, and 7). 



Scalenus anterior and longus colli 

 Scalenus medius and posterior 



Phrenic nerve 



Seal, anterior and longus colli 



Seal, medius and posterior 



Seal, anterior and longus colli 

 Seal, medius and posterior 



Scalenus anterior and longus colli 

 Scalenus medius and posterior 



FIG. 34. Diagram of Brachial Plexus. (After Paterson.) 



{Medial Anterior Thoracic (C. 8 and T. i). 

 Medial Cutaneous of Arm (Lesser Internal Cutaneous) (T. i). 

 Medial Cutaneous of Forearm (Internal Cutaneous) (C. 8 

 and T. i). 

 Medial Head of Median (C. 8 and T. i). 

 Ulnar (C. 8 and T. T). 



