DISSECTING MANUAL. 



of the space to unite with a digital branch of the superficial 

 palmar arch. [835] 



The superficial palmar is formed by the terminal part of 

 ulnar which runs from the ball of the little finger across the 

 palm, in the line of the lower border of the fully abducted 

 thumb, just under the palmar fascia, and is usually completed 

 by joining the superficialis vola3. Four digital branches de- 

 scend from its convexity ; the innermost runs along the ulnar 

 border of the little finger, receiving a branch from the deep 

 palmar arch or inner palmar interosseous ; the outer three each 

 receive a branch (inferior communicating, or perforating) 

 from the dorsal interosseous, and one (palmar interosseous) 

 from the deep palmar arch, and then divide at the clefts be- 

 tween the outer four fingers into two branches (collateral digi- 

 tal) for the adjacent sides of the fingers forming each of the 

 clefts. [836] 



The deep palmar is formed by the terminal part of the radial 

 joining the profunda branch of the ulna, half or three-quarters 

 of an inch below the level of the superficial arch. It extends 

 under the flexor tendons from the base of the fifth metacarpal 

 to the upper end of the first interosseous space, crossing the 

 bases of the metacarpals. Branches: superior perforating, 

 three branches running through upper ends of three inner inter- 

 osseous spaces to join dorsal interosseous arteries; recurrent, 

 to anterior carpal arch; articular, to adjacent joints; palmar 

 interosseous, three branches descending to join the three outer 

 palmar digital arteries; communicating, to innermost palmar 

 digital artery. [836] 



VEINS. 



Deep Veins (venae comites). These accompany their ar- 

 teries in pairs. 



Superficial Veins. These arise in the superficial fascia of 

 the hand and form the following trunks : Median : commenc- 

 ing on the back of the thumb this winds round the outer bor- 



[180] 



