THE .VESSELS. 353 



occipitales) of the lymphatic glands of the skull (which are only found on 

 the back of the head) very small and less numerous. 



2. Gl. submaxillares, the largest in the face, they lie at the basis mandibula 

 (eight to ten) and along the art. maxillaris; they open into gl. cervicales 

 superficiales . 



3. Glandules parotidecs, deep, lying superficially between parotis and TO. 

 masseter. 



4. GL zygomaticcB, under the zygoma, they open into gl. submaxillares and 

 cervical, superf. 



5. Gl.faciales profundcs, behind m. buccinator, and on art. maxillar. interna, 

 they receive the deep lymphatics of the face ; its cavities and the dura 

 mater; they open into gl. cervical, profundce. 



b. Lymphatics of the head. The superficial accompany the art. temporal, 

 superf. to the gl. parotid., and the art. occipitalis to gl. mastoidecs. The deep 

 vasa lymphatica meningea pass on the art. and v. meningea med. to the gl. ju- 

 gulares. No one has, at present, been able to follow lymphatics into the sub- 

 stance of the brain. The superficial lymphatics of the face pass along the 

 blood-vessels to the gl. submaxillares; the deep pass out from the temporal, and 

 pterygo-palatine fossae and the nasal cavities. Those of the tongue, pharynx, 

 velum palati and larynx, open into the gl.faciales prof, and gl. cervicales. 



c. The lymphatic glands of the neck are placed upon its anterior surface. 



1. Gl. cervicales superficiales are situated generally along the V. jugular, 

 externa, in the triangular space between clavicula, mm. sterno-cleido- 

 mastoid. and trapezius, covered by plat ysmamy aides; also several small 

 ones under the os hyoides. 



2. Gl. cervicales profundce pass in numbers along the F. jugular, and carotis 

 intern., from the process, mastoid., as far downwards as the superior open- 

 ing of the cavity of the thorax, before the vertebral column on the sides 

 of the pharynx and oesophagus, and are connected with gl. tracheales. 



d. The lymphatics of the neck come from the pharynx, oesophagus, larynx, 

 trachea, pass through the gl. cervicales, and out of these into a common trunk, 

 which empties itself upon the left side into the ductus thoracicus, upon the 

 right into the truncus lymphaticus dexter. 



23 



