THE TONGUE 



337 



The muscular tissue may be divided into intrinsic and extrinsic. The in- 

 trinsic muscuhiture consists, not of distinct muscles, but rather of systems of fibers 

 which run longitudinally, vertically, and transversely, blending with the extrinsic 

 muscles, which are now to be described. 



1. Stylo-glossus. — This is a long, thin muscle, which lies on the lateral part 



■s ":.« 



01 • I. 



O o 



4^ 





m -a .2 



bO 



■^ C A" .3 



2 &'^ r 



0. " t, — 



s C s a, 



~ "cs -^ "=5 



Ph ;3 O M 



^ o 3 



o - ■*! k4 





S "d 



O p^^ ^- OJ 



r t, o o 



■H ^ -fi' -2 



4) oj 2 "^ 



S..2 



^ S 



^ ■S'J= 



of the tongue. It arises by a thin tendon from the outer surface of the great 

 cornu of the hyoid bone, near the articulation with the small cornu. It terminates 

 near the tip of the tongue by blending with its fellow of the opposite side and with 

 the intrinsic musculature. The action is to retract the tongue. Unilateral con- 

 traction would also draw the tongue toward the side of the muscle acting. 

 22 



