THE UPPER LIMB 



349 



palmar cutaneous branch of the ulnar arises in common with the 

 branch to the integument of the forearm and descends on the ulnar 

 artery, keeping beneath the deep fascia until it approaches the 

 wrist, where it becomes cutaneous on the outer side of the tendon of 

 the flexor carpi ulnaris. It then passes over the anterior annular 

 ligament, and is distributed to the integument of the inner part of 

 the palm. The palmar cutaneous branch of the median arises a 

 little above the wrist, and pierces the deep fascia just above the 

 anterior annular ligament, in the interval between the tendons of 

 the flexor carpi radialis and palmaris longus. It then descends 



Radial 



Dorsal Branch of Ulnar ., 



, Twigs of Median 



Fig. 193. — Diagram of the Nerves of the Hand 

 (Dorsal Aspect). 



over the anterior annular ligament, and is distributed to the in- 

 tegument of the outer part of the palm, and slightly to that of the 

 thenar erhinence. It communicates internally with the palmar 

 cutaneous of the ulnar, and externally with that of the radial. The 

 palmar cutaneous branch of the radial arises from the external 

 division of the nerve which passes to the outer side of the thumb. 

 It is joined by a twig from the anterior branch of the musculo- 

 cutaneous, and is distributed to the integument of the thenar 

 eminence. 

 The integument of the dorsum of the hand and fingers is supplied 



