THE FACIAL NODES 



711 



including not onh' skin, but mucous membrane. They receive lymph-vessels 

 from the nose, cheek, upper lip, the external part of the lower lip, together with 

 almost all those from the gums and teeth and from the anterior third of the lateral 

 portions of the tongue. In agreement with the fact that these nodes, though lying 

 superficially and draining the skin, drain also the mucous membrane, their vessels 

 empty not only into the superficial cervical chain, but also into the deep carotid 

 chain. 



The facial nodes are evidently outlying nodes of the submaxillary group. 

 They are in two main sets — (1) the supra-maxillary set, which consists of from 

 one to thirteen nodes, resting on the mandible near the point where it is crossed 

 by the external maxillary (facial) artery. (2) The buccinator set, lying on the 



Fig. 556. — Lymphatics of the Outer Nose and Face. (After Klittner.) 



\ 



Node of 



external 



jugular 



chain 



Node of , 

 internal 

 jugular 

 chain 



line connecting the lower margin of the ear and the angle of the jaw. Of these 

 latter nodes, some lie near the point where the parotid duct perforates the buc- 

 cinator muscle; the others are farther forward, between the external maxillary 

 artery and the anterior facial vein. Additional nodes belonging to the group may 

 occur near the nose and in the suborbital region. These facial nodes receive affer- 

 ents from the outer surface of the nose, the lips, eyelids, cheek, temporal part of 

 the face, the mucosa of the mouth, the teeth of the upper jaw, the gums, the tonsils, 

 and the parotid gland. Their efferents pass to the submaxillary and parotid 

 nodes. 



6. The submental nodes [Igl. submentales], usually two in number, lie in the 

 triangle bounded by the anterior bellies of the two digastric muscles and the hyoid 

 bone (fig. 559). They are usually near the median fine, and drain the skin of the 

 chin, the skin and corresponding mucous membrane of the central part of the lower 



