586 



NERVES OF THE UPPER LIMB. 



reaches to the eibow, or nearly so, distributing filaments outwards over the 

 biceps muscle. .. This branch is often connected with the intercosto-humeral 

 nerve. 



Fig. 359. 



Fill. 360. 



Fig. 359. — Anteriok Cuiwneous JS^erves of the Shoulder axd Arm (from Sappey 

 after Hirsclifeld and Leveille). l 



1, 1, supraclavicular and supra-acromial nerves from the cervical plexus ; 2, 2, 2, 

 cutaneous branches of the circumflex nerve ; 3, 4, upper bi'anches of the internal cuta- 

 neous nerve ; 5, superior external cutaneous branch of the musculo-spiral ; 6, internal 

 cutaneous nerve piercing the deep fascia ; 7, posterior branch ; 8, communicating twig 

 with one of the anterior branches ; 9, 10, anterior branches of this nerve, some turning 

 round the median basdic and ulnar veins ; 11, musculo-cuianeous nerve descending over 

 the median cephalic vein ; 12, inferior cutaneous branch of the musculo-spiral nerve. 



Fig. 360. — Anterior Cutaneous Nerves of the Forearm and Haxd (from Sappey 

 after Hirsclifeld and Leveille). ! 

 9, 10, 13, distribution of the anterior branches of the internal cutaneous nerve ; 14, 

 union of one of these witli a twig of the ulnar nerve ; 12, inferior cutaneous branch of 

 the musculo-sijiral nerve; 11, 15, distribution of the external cutaneous nerve; 16, 

 union of one of its branches with 17, the terminal brancli of the radial nerve ; IS, 

 palmar cutaneous branch of the median nerve ; 19, 20, internal and external collateral 

 branches to the thumb from the median nerve ; 21, external collateral to the index 

 finger ; 22, 23, collateral branches to the index, middle and fourth fingers ; 24, 25, col- 

 ateral branches from the ulnar nerve to the fourth and fifth fingers ; the network of 

 communicating twigs formed by the terminal branches of these cutaneous nerves is repre- 

 sented at the extremities of the fingers. 



