394 LYMPHATICS OF THE VISCERA. 



The Internal iliac glands are situated in the course of the internal 

 iliac vessels, and the sacral glands are supported by the concave surface 

 of the sacrum. 



The Deep lymphatic vessels are continued upwards from the thigh, 

 beneath Poupart's ligament, and along the external iliac vessels to the 

 lumbar glands, receiving in their course the epigastric, circumflexa ilii, 

 and ilio-lumbar lymphatic vessels. Those from the parietes of the 

 pelvis, and from the gluteal, ischiatic, and obturator vessels, follow the 

 course of the internal iliac arteries, and unite with the lumbar lym- 

 phatics. And the lumbar lymphatic vessels, after receiving all the 

 lymphatics from the lower extremities, pelvis, and loins, terminate by 

 several large trunks in the receptaculum chyli. 



LYMPHATICS OF THE VISCERA. 



The Lymphatic vessels of the lungs are of large size, and are distri- 

 buted over every part of the surface, and through the texture of these 

 organs ; they converge to the numerous glands situated around the 

 bifurcation of the trachea and roots of the lungs, the bronchial glands. 

 Some of these glands of small size, may be traced in connection with 

 the bronchial tubes for some distance into the lungs. The efferent 

 vessels from the bronchial glands unite with the tracheal and oesopha- 

 geal glands, and terminate principally in the thoracic duct at the root 

 of the neck, and partly in the ductus lymphaticus dexter. The bron- 

 chial glands, in the adult, present a variable tint of brown, and in old 

 age a deep black colour. In infancy they have none of this pigment, 

 and are not to be distinguished from lymphatic glands in other situa- 

 tions. 



The Lymphatic vessels of the heart originate in the subserous areolar 

 tissue of the surface, and in the deeper tissues of the organ, and follow 

 the course of the vessels, principally, along the right border of the heart 

 to the glands situated around the arch of the aorta and the bronchial 

 glands, whence they proceed to the root of the neck, and terminate in 

 the thoracic duct. 



The Pericardiac and thymic lymphatic vessels proceed to join the 

 anterior mediastinal and bronchial glands. 



The Lymphatic vessels of the liver are divisible into the deep and 

 superficial. The former take their course through the portal canals, 

 and through the right border of the lesser omentum, to the lymphatic 

 glands situated in the course of the hepatic artery and along the 

 lesser curve of the stomach. The superficial lymphatics are situated 

 in the areolar structure of the proper capsule, over the whole surface 

 of the liver. Those of the convex surface are divided into two sets; 

 1. Those which pass from before backwards; 2. Those which 

 advance from behind forwards. The former unite to form trunks, 

 which enter between the folds of the lateral ligaments at the right 



