| Term 
 | Definition 
 
        | O: C5-C7 I: anterior arm (biceps, coracobrachils, brachialis)
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | O: C5-T1 I: anterior forearm
 except 1 1/2 muscles on the ulnar side
 (flexar digitorum profundus)
 (flexor carpi ulnaris)
 2 radial lumbricals
 3 thenar muscles in hand
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | O: C8-T1 I: 1 1/2 muscles on ulnar side of anterior forearm (1 flexar carpi ulnaris
 1/2 flexor digitorum
 profundus)
 entire hand except muscles innervated by median nerve
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | O: C5-C8 I: entire posterior arm and forearm
 cutaneous over most of post of hand
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | O: C5-C8 I: deltoid teres minor
 skin over deltoid
 |  | 
        |  |