302 THE VASCULAR SYSTEMS 



The superficial cervical nodes, four to six, along the external 

 jugular beneath the platysma, receive the auricular lymphatics, 

 efferent trunks from the suboccipital, mastoid, and some 

 from the parotid and submaxillary nodes. The efferent vessels 

 enter the inferior deep cervical nodes. 



The deep cervical, twenty to thirty, consist of an upper and 

 a lower set. The former run along the internal jugular vein; 

 the latter around the lower part of the vein and into the supra- 

 clavicular fossa, and join the superior mediastinal and axillary 

 nodes; they receive afferent trunks from all the other cervical 

 nodes and the lymphatics of the lower part of the neck, and 

 send out branches which unite into a jugular lymphatic trunk. 

 This trunk then joins the thoracic or right lymphatic duct, 

 or may open into a large vein. 



The lymphatics of the scalp join the suboccipital, mastoid, 

 and parotid nodes. 



The lymphatics of the face follow the course of the facial 

 vein to the submaxillary nodes, but there are others externally 

 which join the parotid nodes. The deep lymphatics from the 

 orbit, nasal cavity, palate, and check join the internal maxillary 

 nodes. 



The cranial lymphatics form a network in the pia mater, 

 and run along the internal carotid, vertebral, and internal 

 jugular veins to the deep cervical nodes. 



The lingual lymphatics run with the ranine vein, traverse 

 several lingual nodes, and join the upper deep cervical nodes. 

 One or two join the submaxillary. 



The retropharyngeal nodes are found in the buccopharyngeal 

 fascia behind the pharynx and in front of the arch of the atlas, 

 however, separated from the latter by the rectus capitis anticus 

 major. They drain the nasal fossse, the nasopharynx, and the 

 Eustachian tube, as far as the tympanum; then their efferents 

 pass to the upper set of deep cervical modes. 



