160 HANDBOOK OF ANATOMY 



The Superficial Palmar Arch is formed at the level of the 

 distal border of the abducted thumb by the anastomosis of the 

 superficial volar branch of the radial artery with the superficial 

 terminal branch of the ulnar artery. 



It lies on flexor brevis minimi digiti, opponens minimi digiti, 

 and tendons of flexor sublimis digitorum. It is covered by 

 palmar fascia and integument. 



The Deep Palmar Arch is formed about three-quarters of an 

 inch above the level of the superficial arch, by the anastomosis 

 of the radial artery with the deep terminal branch of the ulnar 

 artery. 



It lies deeply in the palm on the bases of the metacarpal 

 bones and the interossei muscles, and is covered by the flexor 

 tendons. From the arches branches are given off for the 

 supply of the muscles and fingers. 



The back of the hand and fingers are supplied by branches 

 given off from the radial artery while it lies on the back of the 

 trapezium. 



Veins of the Upper Limb. 



The veins of the upper limb are arranged in two sets super- 

 ficial and deep. Both sets open eventually into a common 

 trunk, known as the axillary vein, which continues as the sub- 

 clavian vein to the innominate vein. 



The Deep veins consist of vense comites arranged in the 

 usual way, which open into the axillary vein. 



The Axillary vein commences as the continuation of the 

 basilic vein opposite the lower border of teres major, and ter- 

 minates at the lower border of the first rib by becoming the 

 subclavian vein. Its muscular relations are similar to those 

 of the axillary artery, from which it is separated in the lower 

 part of its course by the ulnar nerve, and above by the inner 

 cord of the brachial plexus. To the inner side of the axillary 

 vein lie the groups of axillary glands. 



Tributaries. 1. Vense Comites of the brachial artery at the 

 lower border of the subscapularis muscle. 



2. Cephalic vein at the upper border of pectoralis minor. 



