MUSCLES OF THE TONGUE. 



ings in the taste buds have been described. The others terminate in bulb- 

 ous corpuscles or in free endings beneath or within the epithelium. 



The muscular layer consists of interwoven bundles of striated fibers 

 which are inserted into the submucosa or into the intermuscular connective 

 tissue. Some of these striated fibers are branched. The musculature 

 of the tongue is partly divided into right and left halves by a dense median 

 connective-tissue partition, the septum linguae. It begins low on the 



Emigrating leucocytes. 



Fragments of epithelium. 



Emigrated leuco 

 cytes. 





Stratified 

 epithelium. 



$&i 

 j^**^ 



s**^%* 



?'*' *. 



Lymphoid tissue 

 of the tunica < 

 propria. | 



FIG. 206. FROM A THIN SECTION OF A LINGUAL TONSIL OP A MAN. X 420. 

 On the left the epithelium is free from leucocytes, on the right many leucocytes are wandering through. 



hyoid bone, attains its greatest height in the middle of the tongue, and be- 

 comes lower anteriorly until it disappears. It does not extend clear through 

 the tongue since it ends 3 mm. beneath the dorsum. The muscles of the 

 tongue are partly vertical (genioglossus, hyoglossus, and verticalis linguae 

 muscles), partly longitudinal (styloglossus, chondroglossus, superior and 

 inferior longitudinalis linguae muscles) and partly transverse (the trans- 

 versus linguae muscle). The glossopalatine muscle of the palatine group 



