THE ABSORBENTS. 



Fig. 337. 



in the right lymphatic duct. 

 Sometimes they unite into a 

 single trunk, which opens sepa- 

 rately into the subclavian vein 

 near its termination. 



The superficial lymphatics of 

 the upper limb are usually de- 

 scribed as forming two divisions 

 corresponding with the super- 

 ficial veins on the outer and 

 inner borders. On the front of 

 the limb they arise from an arch 

 formed in the palm of the hand 

 by the union of two lymphatic 

 vessels proceeding from each 

 finger : becoming more numerous 

 in the forearm, they are found 

 thickly set over its surface, 

 whence they pass upwards in 

 the arm ; the inner vessels in 



Fig. 337. SUPERFICIAL LYMPHATICS OF THE BREAST, 



SHOULDER, AND UPPER LIMB, FROM BEFORE (after 



Mascagni). 



The lymphatics are represented as lying upon the deep 

 fascia. 



a, placed on the clavicle, points to the external jugular 

 vein ; b, the cephalic vein; c, the basilic vein ; d, radial ; 

 e, median ; /, ulnar vein ; g, great pectoral muscle cut 

 and turned outwards ; 1, superficial lymphatic vessels 

 and glands above the clavicle ; 2, those below the clavicle 

 partly joining the foregoing and dipping into the triangular 

 space between the deltoid and pectoral muscles ; 3, 

 lymphatic vessels and glands placed along the border of 

 the axilla and great pectoral muscle ; 4, upper brachial 

 and axillary glands and vessels ; 5, two small glands 

 placed near the bend of the arm ; 6, radial lymphatic 

 vessels ; 7, ulnar lymphatic vessels ; 8, 8, palmar arch 

 of lymphatics ; 9, 9', outer and inner sets of vessels. 



a straight direction, and those placed further 

 outwards inclining gradually inwards over the 

 biceps muscle to reach the axillary glands. On 

 the back of the hand also tAvo lymphatics pro- 

 ceed from each finger ; and from the copious 

 network on the back of the forearm vessels pass 

 over the radial margin, and in greater number 

 round the ulriar side to join those in front. The 

 lymphatic vessels in the front of the upper arm 

 are also joined by others which pass round each 

 side of the limb, and by some which descend 

 from the shoulder. 



The deep lymphatics of the upper limb corre- 

 spond with the deep blood-vessels. In the fore- 

 arm they consist, therefore, of three sets, as- 

 sociated respectively with the radial, ulnar, 

 and interosseous arteries and veins. In 



