THE BRACHIAL PLEXUS 



if the scapula is fixed, it can act as an auxiliary muscle of 

 respiration. It is never paralysed alone. 



The Medial Cutaneous Nerve of the Arm (Lesser Internal 



FIG. 65. The Nerve-supply of the Skin on the Anterior Aspect 

 of the Upper Limb. 



A . The individual nerves of supply. 



B. The segmental supply, 



1. Posterior supraclavicular nerves. 



2. Lateral cutaneous nerve of arm. 



3. Dorsal cutaneous nerve of forearm. 



4. Lateral cutaneous nerve of forearm. 



5. Palmar branch of radial nerve. 



6. Digital branches of median nerve. 



7. Digital branches of ulnar nerve. 



8. Palmar branch of ulnar nerve. 



9. Palmar branch of median nerve. 



10. Medial cutaneous nerve of forearm. 



11. Medial cutaneous nerve of arm. 



12. Intercosto-brachial nerve. 



Cutaneous) communicates with the intercosto-brachial (inter- 

 costo-humeral, T. 2) and then supplies the skin on the dorso- 

 medial aspect of the arm. In angina pectoris (p. 192) and, 

 sometimes, in malignant disease of the breast referred pain is 



