718 



THE LYMPHATIC SYSTEM 



brain, although there is presumably no direct connection between the spaces and 

 the lymphatic vessels. The Ij^mphatics of the nasal sinuses end in the retro- 

 pharyngeal nodes. 



Fig. 563. — The Lymphatics of the Tongue. (Poirier and Charpy.) 



Basal trunks 



Marginal collecting trunks 

 '7 I with hypoglossal nerve 

 ,' Marginal trunk 



1 Collecting 

 !■ trunks from 

 J tip of tongue 



/ Submen- 

 7" tal node 

 ' Collecting 

 - — — trunks from 

 margin of 



..tongue 



Node inter- 

 calated in 

 these ducts 

 Vessel from margin of 

 tongue ending in in- 

 ternal jugular chain 



Intercalated node 



Central vessel passing 

 to node above the 

 omo-hyoid 



Inferior node of in- 

 ternal jugular 

 chain (above omo- 

 hyoid muscle) 



Fig. 564. — The Lymphatics of the Pharynx. (After Poirier and Cuneo.) 



Afferent vessels of re 

 tro-pharyngeal node 



Retro-pharyngeal 

 nodes 



Collecting vessels of 

 pharynx to deep 

 cervical chain 



1 Retro-pharyngeal 

 J nodes 



Intercalated node 



i Deep cervical 

 chain 



1 



