HYOIDEAN GROUP. 171 



GENIO-HYOIDEUS. 

 (Fig. 71. e.) 



Covered by the preceding muscle, this is long, fusiform, and 

 tendinous at its extremities. 



Origin. — From the lower jaw, near its symphysis. 



Insertion. — The free extremity of the spur process of the os 

 hyoides. 



Relation. — Externally with the preceding muscle, superiorly 

 ■with the genio-hyo-glossus, and internally with its fellow. 



' Muscles of the maxillary space— infero-lateral view. Stractures removed from the right side. 

 «, Genio-hyoideus ; /, Stylo-hyoideus ; g, Hyoideus magnua. 



Action. — It draws the os hyoides towards the anterio-inferior 

 part of the maxillary space. 



HYOIDEUS MAGNUS. 



{Kerato-hyoideus Magnus.) 



(Fig. 71. g.) 



Situated on the outer side of the pharynx, larynx, and 

 ;guttural pouch, behind the comu of the os hyoides and running 

 in the same direction, it is thin, fusiform, and tendinous at 

 either extremity. 



Origin. — From the postero-inferior angle of the comu of the 

 OS hyoides. 



