HYOlDEAX GROUP. 



171 



GEXIO-HYOIDEUS. 

 (Frc,. "I.e.) 



Covered bv 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. 



FIG. 71. 



Muscle* of tbe maxillary space infero-lateral view. Structures removed from the right side. 

 e, Genio-hyoidens ; /, Stylo-hyoideus ; ;/, Hyoideus magniu. 



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

 part of the maxillary space. 



HYOIDKUS MAGNUS. 



(Kerato-hyoideus Magnus. ) 



(Fie. 71. g.) 



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

 guttural pouch, behind the cornu 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 cornu of the 

 os hyoide>. 



