502 ANATOMY IN A NUTSHELL. 



pericardium and around the greai vessels at the base of the heart. The vessels 

 from the liver jus; mentioned which pass through those mediastinal nodes pass 

 into the right lymphatic duct, (b) Those vessels winch run around the anterior 

 margin to the under surface of the liver pass to nude- in the lesser omentum. 

 Those branches which pass outward to the right lateral ligament pass either 

 through the Diaphragm to the anterior mediastinal nodes or across the cms of 

 the Diaphragm to the anterior mediastinal nodes or across the cms of the 

 Diaphragm into the thoracic duct, (d) Those branches which run outward 

 from the left lobe to the left lateral ligament and then through the Diaphragm 

 to the anterior mediastinal nodes. Those superficial lymphatic vessels which 

 are on the under surface of the liver form the following groups, (a) those branches 

 which arise to the right of the "'all bladder pass to the lumbar nodes, (b) those 

 branches surrounding the gall bladder pass to the nodes in the lesser omentum, 

 and (c) those branches arising to the left of the gall bladder pass either to the 

 oesophageal nodes or to nodes along the lesser curvature of the stomach. 



Tin: DEEP lymphatic VESSELS of the livee pass with the branches of 

 the portal vein, hepatic artery, and hepatic duct into the substance of the liver. 

 They puss from the liver at the transverse fissure to enter nodes which are 

 placed along the lesser curvature of the stomach and behind the pancreas. Or 

 they may join a lacteal before entering the thoracic duct. 



The superficial lymphatic vessels of the thoracic wall pass across the Trape- 

 zius and Latissimus dorsi muscle.- behind and the Pectoralis major muscle in 

 front to end in the axillary nodes. Most of those from the mammary gland 

 pass to small nodes which are situated along the lower border of the Pectoralis 

 major muscle in the axilla, however, a few from the inner side of mammary gland 

 pass through the intercostal spaces to the anterior mediastinal node-. 



The deep lymphatic vessels of the thoracic Avail are. (1) intercostal \ es- 

 SELS which drain the Intercostal muscles and pleura. These join vessels from 

 the buck of the thorax and spinal canal which entering the intercostal nodes 

 descend on the spine to the thoracic duct. The intercostal nodes which are 

 small, lie on each side of the spine near the costo-vertebral articulation, and 

 some of those lying between the Intercostal muscles. (2) The internal 

 mammary which begin on the abdominal muscles above the umbilicus where they 

 communicate with the epigastric. They pass upward through the Diaphrgam 

 where they are joined by the intercostal lymphatic vessels to empty into the 

 right lymphatic duct on the right side, while those on the left side empty into 

 thoracic duct. (3) The lymphatic \ essels of the Diaphragm empty into the 

 anterior mediastinal and internal mammary nodes anteriorly, and into the in- 

 tercostal and posterior mediastinal nodes posteriorly. 



The internal mammary nodes lie at the anterior end of each intercostal 

 -pan- near the internal mammary vessels. 



The posterior mediastinal nodes lie along the aorta and oesophagus, and 

 communicate with the intercostal nodes, lumbar nodes, and deep cervical 

 nodes. 



The superficial lymphatic vessels of the lung form a minute plexus which 

 covers the outer surface Of the lung under the pleura, while the deep lymphatic 



