946 



HUMAN ANATOMY. 



Their afferents are from the temporal region of the scalp, from the posterior surface 

 of the pinna and of the external auditory meatus. Their efferents pass to the upper 

 nodes of the superior deep cervical group. 



The anterior auricular nodes (lymphoglandulae auriculares anteriores) vary from 

 one to three in number and are situated immediately in front of the tragus, beneath 

 the parotid fascia. Their afferents come from the anterior surface of the pinna and 

 of the external auditory meatus, from the integument of the temporal region, and 

 from the outer portions of the eyelids. Their efferents pass to the superior deep 

 cervical nodes. 



The parotid nodes (lymphoglandulae parotideae) are situated in the substance 

 of the parotid gland (Figs. 796, 801). They are quite numerous and vary 



greatly in size. They 

 Fig. 796. receive affcre^its from 



the same regions as the 

 anterior auricular nodes, 

 and the lower nodes of 

 the group also receive 

 stems from the soft 

 palate. Their efferents 

 pass to the superior 

 deep cervical nodes. 



The submaxillary 

 nodes (lymphoglandulae 

 submaxillares) are from 

 three to eight or more 

 in number, forming a 

 chain along the lower 

 border of the horizontal 

 ramus of the mandible, 

 as far forward as the 

 attachment of the ante- 

 rior belly of the digastric 

 muscle (Fig. 796). One 

 node which rests upon 

 the facial artery just 

 before it passes over the 

 ramus of the mandible is 

 larger than the rest, and 

 this, together with two 

 others, which are some- 

 what smaller and lie one 

 either side of the 



Posterior 



auricular node 



Anterior 

 auricular node 



Occipital node 



Parotiil node 



Superior deep 

 cervical nodes 



Superficial 

 cervical nodes 



on 



Superficial lymphatic vessels and nodes of head and 

 neck ; semidiagrammatic. 



larger node, are the 

 most constant represen- 

 tatives of the group, the 

 remaining nodes being 

 usually still smaller and 

 varying both in number and position. Occasionally a small node occurs imbedded 

 in the substance of the submaxillary gland. These nodes receive, as afferents, 

 vessels from the submental and facial nodes and also directly from the territory 

 drained by the latter, namely, the upper lip, the outer surface of the nose and the 

 cheek, from the inner portions of the eyelids, from the lower lip, the gums of 

 both jaws, and from the anterior part of the tongue. Their efferents descend upon 

 the surface of the submaxillary gland to open into the superior deep cervical nodes, 

 especially into thosf. situated in the neighborhood of the bifurcation of the common 

 carotid artery. 



The submental nodes are two or sometimes three in number, and are situated 

 in the triangular space included between the anterior bellies of the two digastric 

 muscles, each of the two principal nodes resting upon the inner border of one of the 



