•38 



THE LYMPHATIC SYSTEM 



part dorsal to the renal vein; one of the nodes lies as far caudal ward as the bifurca- 

 tion of the aorta; and one or two vessels may pass to pre-aortic nodes. On the 

 left side the vessels end in four or five nodes of the lumbar group. The efferents 

 of these nodes pass through the diaphragm and end in the thoracic duct. 



The lymphatics of the Suprarenal. — The lymphatic vessels coming from the 

 capsular and parenchymatous plexuses pass, on the right side, into two or three 

 anterior para-aortic nodes, and a small retro-venous gland, near the pillar of the 

 diaphragm; on the left side, into para-aortic nodes, and, in part, through the 

 diaphragm, in company with the splanchnic nerve, to a posterior mediastinal 



Fig. 579. — The Lymphatic Circulation of the Ileo-c^cal Region, Anterior View. 



(After KeUy.) 



■P^\ - 



gland, lying between the ninth thoracic vertebra and the aorta. Anasto- 

 moses occur with the lym))hatics of the kidney. 



In addition to the capsuhir lymphatics proper, Kumita describes a subserous 

 plexus, which is present over l)oth kidney and adrenal, which anastomoses with 

 the lymphatics of tiu; liver and diaphrugm. The efferents of this plexus collect, 

 on the right side, to a gland placcnl to the right of the inferior vena cava, anterior 

 to the right n^nal vein, and on the left side to a gland anterior to the left renal 

 vein. 



The lymphatics of the ureter. — Sakata has recently studied the lymphatics of 

 the ureter. They fall into three groups: (1) An anterior (upper) group, which 

 run to the anterior lumhnr nodes, or join the renal lymphatics; (2) a middle 

 group which pass to tin; posterior lumbar and int(M-ili;i(; nodes; (3) a posterior 

 (lower) group wliicli pass to hyj)ogastric nodes and which anastomose with lym- 

 phatics of the bladder. 



