DISSECTING MANUAL. 



divide at the finger clefts into branches supplying the adja- 

 cent sides of the second, third, and fourth fingers. All lie su- 

 perficial to the digital arteries and supply the sides and front 

 of each finger, with the back of the last phalanx of the thumb 

 and last two phalanges of the index finger. The middle branch 

 and the next internal supply the two outer Lumbricales. [629] 



Ulnar. Passing between the heads of the Flexor carpi 

 ulnaris, and then descending under that muscle, and then on 

 the inner side of the ulnar artery, it pierces the deep fascia ex- 

 ternal to the pisiform bone, crosses the annular ligament to the 

 palm and divides under the Palmaris brevis into two branches, 

 superficial and deep. It may communicate with the median 

 in the forearm. [629] 



Branches in Forearm. Articular : to the elbow-joint. Mus- 

 cular : arising near the elbow, to the Flexor carpi ulnaris and 

 Flexor prof undus digitorum (inner half) . Palmar cutaneous : a 

 branch piercing the deep fascia low down and supplying the 

 hypothenar eminence and palm. Dorsal cutaneous : This arises 

 in the middle third and runs downward and backward under 

 the Flexor carpi ulnaris; then becoming cutaneous low down 

 on the inner side of the forearm it passes to the back of the 

 hand. After supplying the wrist and back of the hand it di- 

 vides. One branch supplies the back of the inner side of the 

 little finger; the other divides at the finger cleft to supply the 

 contiguous sides of the little and ring fingers, communicating 

 with the radial. [629] 



Branches in Palm. Muscular : to the Palmaris brevis. Su- 

 perficial: a cutaneous branch which subdivides; the inner 

 branch supplies the inner border of the little finger in front; 

 the outer branch divides at the finger cleft to supply the adja- 

 cent sides of the little and ring fingers, in front, and communi- 

 cate with the median. Deep: a muscular branch running 

 between the Flexor brevis and Abductor minimi digiti ; it sup- 

 plies them and the Opponens minimi digiti, and then passes 

 with the deep palmar arch, under the deep flexor tendons, to 



[176] 



