////: 





two genio-gloesi lie together on tlie median piano of the tongue, 

 t towards their origin, where they are constantly kept apart by a>l 

 . Their inferior border responds to the genio-hyoid muscles, and their 

 anterior fibres are partly included between the two 

 mucous layers of the frrenmu linguae. They are rc- 

 i, by their external face, to the basic- or great 

 hyo-glossus, the stylo-glossus, the sublingual gland, the 

 lingual artery, and the terminal branches of the three 

 lingual in ' 



The action of the genio-glossus is complex; accord- 

 ing to the portion of its fibres \\bich contract, it will 

 carry the tongue forwards, pull it into the buccal 

 tv, or draw it downwards into the floor of the mouth. 

 (Kg. 149, 4.) 



SMALL IIYO-GLOSSU8. 

 /i/. Lingujilis sujierior of Man. (Lingual!* of /'//- 



I'nder this name is described a thin band, formed of 

 parallel fibres, which is exposed immediately on remov- 

 ing the mucous membrane, with the subjacent glands, 

 from the ba-c of the tongue. This band arises from the 

 inner side of the articulation uniting the body of the os 

 hyoides to its small branch. It passes above the trans- 

 verse muscle of that bone, which it crosses perpendi- 

 cularly, is surrounded at this point by a great mass of 

 adipose tissue, and is prolonged directly forward, be- 

 neath the lingual mucous membrane. Its fibres then 

 vanish, either on the superior aspect of the tongue or 

 on its sides, or they descend obliquely in crossing the 

 direction of the hyo-glossus, to join the superior border 

 of tin- stylo-glossus (Fig. 149, 3). 



(This muscle contracts and retracts the tongue.) 



FHABYNGO-GLOSSUS. 



^'/itonym. The palato-glotsut of Man.) 



A rudimentary muscle formed of parallel fibres, 

 which, from their origin on the lateral wall of the 

 pharynx, pass outside the articular angle of the branches 



of the OB liyoi.b B, and 1" t \eell the hyo-glossus and gellio- 

 -iis, mixing with, and intercrossing their fibres. 



3. Labial ylamJu. The numerous glands of the 

 ton-jin- may be divided into rac< moso (or loluihtted i 

 glands, and el. > ( d follicles (or folliciilar glands.) 



Tin | '.linnlx are spr. ad on the sides and base 



the tongue. Near its upper border tiny form two 

 rows, \\hicli an- rendered \isihlc by the presence of a 



II tubercle pla-'ed beside < ach of them. At the base 

 of the tongue they are found 1> Heath the fungiform and 

 calycifc.rni papilln-. as well as Iwiieath the layer of 

 inclosed follicles which lines the isthmus of the fatiGM. 



At the entrance t-> this passage, the l.n-.'iial mucous 

 i brain; is mammilh'ted. and each elevation has an 



"NK I.OBE OF A RACE- 

 MOSE GLAM'. 



1, Casing of connective 

 tissue; 2, Excrtti-ry 

 duct : 3, Glandular 

 vesicle, or acini. 



Ki-. 151. 



MM l.l-'l 1.\l: i.l.VNH 

 i I:OM mi I:<N>I ,.i 



Illl Ii'S.,1 I . 



1, K|>ithi'liuin ; '_'. I'.i- 

 pUlttofBnOOtU nii'iii- 

 l.r..: 



thr ("llicU-; 4.' Ill- 

 Test i t till- 

 glnnd compoeeil i 

 i "litn-.-tiv 



KH'ro- vii >< -ul:ir ma- 

 trix, fnrmin.: it.- |'-ii'- 

 enchym.-i. 



tail. . tin- 



i|>sules or 

 foil! 



7. 2 



