332 



THE TONGUE. 



fibres incline upwards, forming a series of curves with the concavity 

 turned upwards. The fibres of the palato-glossus muscle are found by 



Fis. 233. 



Fif. 233.— Longitudinal Vertical Section of the Tongue, Lip, &c. (from Kolliker 



and Arnold). 



m, symphysis of the lower jaw ; d, incisor tootli ; /;, liyoid bone ; g h, genio-hyoid 

 muscle ; g, genio-liyo-glossus spreading along the whole of the tongue ; t r, transverse 

 muscle ; I s, superior longitudinal muscle ; g I, lingual glands ; /, lymjjhoid cryirts ; 

 c, epiglottis ; I, section of the lip and labial glands ; o, cut tibres of the orbicularis oris ; 

 I m, levator menti. 



Zaglas and Henle to be continuous with fibres of the transverse set. 



Vertical fibres (musculus perpendicular is externus of Zaglas), de- 

 cussating with the transverse fibres and the insertions of the genio- 

 glossus (fig. 234, li), form a set of curves in each half of the tongue 



Fig. 234. 



Fig. 234. — Transverse 

 Vertical Section of the 

 Tongue in front of the 

 PAPiLLiK Vallat.i:, seen 

 FROM before (from Kol- 

 liker). 



g, the genio-hyo-glossi 

 muscles ; g', the vertical 

 fibres of the right side traced 

 upwards to the surface ; I i, 

 inferior longitudinal muscle 

 with the divided ranine ar- 

 tery ; t r, transverse muscle, 

 entire on one side, but par- 

 tially removed on the other, 

 v/herethe other muscles pass 

 through it ; c, sej^tum lin- 

 gure ; /(, hyo-glossus ; kg I, 

 its fibres spreading upwards 

 almost vertically outside the 

 gcnio-hyn-glossus ; /(.', vertical fibres reaching the surface ; I a, divided plates of the fibres 

 of the superior longitudinal muscle between the vertical fibres ; s t, g I, stylo-glossus j 

 d, glands near the border of the tongue. 



