iZQ 



VEINS OF THE HEAD AND NECK. 



these are more numerous in the deep than in the subcutaneous veins. 

 Valves are constantly to be found at the entrance of branches in the 

 main vessels. 



SUPERFICIAL VEINS OP 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 part of 



Fig. 310. Fig. 310.— Sketch of the Superficial Veins of the Arm 



AND Forearm from before. ^ 



■''fi'i'/^^^^""*^ 1> ticeps muscle; a, radial veins: h, cephalic vein; r, 



ulnar veins ; d, some of the posterior iilnar veins ; c, basilic 

 vein dipping below the fascia ; /, median vein ; ^, median 



basilic ; Ji, median cephalic. 



« 



the forearm they are most frequently collected 

 into three trunks, the radial, -ulnar, and inedkni 

 veins. At the bend of the elbow the median vein 

 divides into an outer and an inner vessel, named 

 respectively median ceplialk and median dasilic, one 

 of which joins with the radial to form the cephalic 

 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 surfaces 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 fore- 

 arm, receiving numerous branches from the auterior 

 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 in the interval 



between the great pectoral and deltoid muscles, 



and finally, dipping in between those muscles, terminates in the axillary 



vein, between the coracoid process and the clavicle. 



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

 other on the back part of the forearm. The poster ior ulnar cutaneous 

 vein, begins on the back of the hand by branches, which unite to 

 form a vein 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 the anterior ulnar cutaneous 

 vein, w^hich 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. 



