466 



VEINS OF THE UPPEll LIMB. 



more numerous in the deep than in the subcutaneous veins. Valves :vre 

 constantly to be found at the entrance of branches into the main vessels. 



SUPERFICIAL VEINS OF THE UPPER LIMB. 



The superficial veins of the upper limb are much larger than the deep ; 

 they lie between the skin and the fascia. At the upper pait of the fore 



Fig. 317. Fig. 317. SKETCH OP THE SUPERFICIAL VEINS OP THE AKM 



AND FOREARM FROM BEFORE. 



^"\ 1, biceps muscle ; a, radial veins ; b, cephalic veiu ; c, uluar 



veins ; d, some of the posterior ulnav veins ; e, basilic veiu 

 dipping below the fascia ; /, median vein ; g t median basilic ; 

 h, median cephalic. 



arm they are most frequently collected into three 

 trunks, the radial, ulnar, and median veins. At the 

 bend of the elbow the median vein divides into an 

 outer and an inner vessel, named respectively median 

 cephalic and median basilic, one of which joins with 

 the radial to form the cep/uzZic vein, while the other 

 joins with the ulnar to form the basilic. The two 

 principal cutaneous veins of the forearm, the radial 

 and the ulnar, commence on the dorsal surface of the 

 hand, by a sort of plexus, formed by the convergence 

 of numerous small veins, which proceed from the dorsal 

 surface of the fingers. 



The radial cutaneous vein commences by branches 

 upon the dorsal surface of the thumb and fore finger. 

 These ascend over the outer border of the wrist, and 

 form by their union a large vessel, which passes along 

 the radial border of the forearm, receiving numerous 

 branches from the anterior and posterior surfaces-'. 

 At the bend of the arm, in the groove external to 

 the biceps muscle, it unites with the median cephalic 

 division of the median vein, to form the cephalic 

 vein. 



The cephalic vein ascends along the outer border 

 of the biceps muscle and in the interval between the 

 great pectoral and deltoid muscles, and finally, dipping 

 in between those muscles, terminates iu the axillary 

 vein, between the coracoid process and the clavicle. 



The ulnar cutaneous veins are two in number, one on the front, the other 

 on the back part of the forearm. The posterior ulnar cutaneous vein, 

 begins on the back of the hand by branches, which unite to form a veiu 

 placed over the fourth metacarpal space, and called by some of the older 

 anatomists "vena salvatella." This proceeds along the ulnar border of the 

 forearm on the posterior aspect, and, below the bend of the elbow, turns 

 forwards to join with the anterior ulnar cutaneous vein, which ascends from 

 the anterior surface of the wrist. At the bend of the elbow, the common 

 ulnar cutaneous unites with the median basilic division of the median to 

 form the basilic vein. 



The basilic vein, usually of considerable size, ascending along the inner 

 border of the biceps muscle, iu front of the brachial artery, passes through 



