TEE LYMPH NODES OF THE HEAD AND FACE 



781 



The external jugular nodes (Figs. 557 and 560) are superficial to the Sterno- 

 mastoid muscle. They are four to six in number and lie along the external 

 jugular vein upon the outer surface of the d.'ep cervical fascia, each node occupy- 

 ing a depression in the fascia. They are usually gathered in a group a little below 

 the parotid gland, but sometimes extend to the middle of the vein. Their afferents 

 drain the lower part of the pinna and parotid region, while their efferents pass 

 around the anterior margin of the Sternomastoid and terminate in the upper deep 

 cervical nodes. 



VESSELS FROM 

 BASE OF TONGUE 



MARGINAL COL- 

 LECTING TRUNKS 



TRUNKS OF 



PRINCIPAL 

 NODE OF 

 TONGUE 



1VESSELS FROM 

 JA.PEX 



SUBMENTAL 

 NODE 



| TRUNKS FROM 

 MARGIN OF 

 ) TONGUE 



SUPRA- 

 OMOHYOID GLAND 



FIG. 559. The lymphatics of the tongue, lateral view. (Poirier and Charpy.) 



The submaxillary nodes (lymphoglandulae submaxillares*) (Figs. 556 and 

 557), three to six in number, are placed in the submaxillary triangle beneath 

 the body of the mandible in the submaxillary triangle and rest on the superficial 

 surface of the sheath of the submaxillary gland. One node (the middle gland 

 of Stahr), which lies on the facial artery as it turns over the mandible, is the most 

 constant of the series. Small lymph nodes are sometimes found on the deep 

 surface of the submaxillary gland. Their afferents drain the inner canthus of 

 the eye, the cheek, the side of the nose, the upper lip, the outer part of the lower 

 lip, the gums, and the anterior part of the margin of the tongue; efferent vessels 

 from the facial and suprahyoid nodes also enter the submaxillary nodes. Their 

 efferent vessels pass to the upper nodes of the deep cervical group. 



