696 



ANGIOLOGY 



between the Stylohyoideus and internal jugular vein to the uppermost of the 

 superior deep cervical glands. They end in a gland which lies at the side of the 

 posterior belly of the Digastricus, on the internal jugular vein; occasionally one 

 or two additional vessels run to small glands on the lateral side of the vein under 

 cover of the Sternocleidomastoideus. 



Vessels from 

 root of tongue 



Vessels from 



margin of 



tongue 



IF 'essels from, 

 * " apex 



Submental 



gland 



Trunks from 

 r margin of 

 tongue 



Interrupting nodule 

 Gentral trunk 



Supra-omohyoid 

 gland 



FIG. 605. Lymphatics of the tongue. (Poirier and Charpy.) 



The lymphatic vessels of the tongue (Fig. 605) are drained chiefly into the deep 

 cervical glands lying between the posterior belly of the Digastricus and the superior 

 belly of the Omohyoideus; one gland situated at the bifurcation of the common 

 carotid artery is so intimately associated with these vessels that it is known as the 

 principal gland of the tongue. The lymphatic vessels of the tongue may be divided 

 into four groups: (1) apical, from the tip of the tongue to the suprahyoid glands 

 and principal gland of the tongue; (2) lateral, from the margin of the tongue 

 some of these pierce the Mylohyoideus to end in the submaxillary glands, others 

 pass down on the Hyoglossus to the superior deep cervical glands; (3) basal, from 

 the region of the vallate papillae to the superior deep cervical glands; and (4) 

 median, a few of which perforate the Mylohyoideus to reach the submaxillary 

 glands, while the majority turn around the posterior border of the muscle to 

 enter the superior deep cervical glands. 



