264 



Lymphatics. 





Plexus lymph ^ 

 mammon in 



Gland. 

 7 sternale9 



017. The Lymphatics of the Thorax. 



The lymphatics of the thoracic cavity are the folio wing : 



a) The intercostal lymphatics, which accompany the Vasa 

 intercostal la. They pass out from the lateral wall of the thorax and 

 abdomen, from the diaphragm, the pleura, the muscles of the back and 

 the vertebral column and pass through 16 20 intercostal glands. 



b) The mcdiastinal lymphatics emerge from the pericardium, 

 the oesophagus and the posterior mediastinum and pass through 8 -12 

 posterior mecliastinal glands. 



c) The internal thoracic lymphatics pass through 

 10 14 anterior mediastinal glands, also 6 8 sternal glands. 

 They form the internal mammary plexus, which empties into the 

 two J)uctus thoracici by means of the Trund mammarii. 



dj The lymphatics of the lungs, partly superficial, partly 

 deep, pass through the b r o n c h i a 1 glands; on the left side they run to 

 the thoracic duct, on the right side through the Truncus broncho-mediastinicus 

 to the right lymphatic duct. 



