256 



Muscles of the Xeck. 



Muiulibula 



Corpus ossis liyoidei 



LigaimMiluni hyotliyreoi 

 deiini nicdiuiu 



Cartilage thyreoidea 



M. styloglossus 



- M. hyoglossus 



- M. geniohyoideus 



Bursa m. steruohyoidel 



M. thyreohyoldeus 



Bursa subcutaiiea 

 promiiientiae laryligeac 



Ligameiitum crjeo- 

 thyreoideuiu [medium 



Cartilage cricoidea 



Glaiidula thyreoidea 



Clavifula - 



M. cricothyreoideus 



]M. sternothyreoideus 



Ligameiitum 

 sternoclaviculare 



Ligamentuni interclaviculare 



302. Muscles of the hyoid bone 



(deep layer), viewed from in front. 

 (The nun. stcrndhyoidei, oniobyuidei, digastrici and niylobyoideus have been removed.) 



M. steruothyreoideus (see also Figs. 298, 300 and 301). Form: flat, oblong-quadrangular, 

 very tbin. Position: on tbe anterior surface of tbe neck, close to tbe glandnla tbyreoidea, covered 

 by tbe mm. omobyoideus and sternobyoideus. Origin: posterior surface of tbe manubrium sterni 

 and of tbe first costal cartilage (see Fig. 313). Insertion: upward and lateralward to tbe lamina 

 cartilaginis tbyreoidoae (linea obli([ua); single fibers go over immediately into tbe m. tbyreobyoideus. 

 Actinn : it draws tbe cartilago tbj'reoidea downward. Inni'rvation : r. descendens n. bjpoglossi. 



M. thyreohyoideus (see also Figs. 298301). Form: flat, quadrangular, very thin. 

 Position: on tbe anterior surface of tbe neck, close to tbe cartilage tbyreoidea, covered by the m. omo- 

 bycjidt'us. r i g i n : lamina cartilaginis tbyreoideae (linea obliqua) (see also above). I n s e r t i o n : cor- 

 pus and cornu majus oss. byoidei {bursa m. t/tyreo/ii/oidei,seQ p. 257). Action: draws tbe byoid 

 bone closer to tbe cartilago tbyreoidea and vice vcisa. Innervation: r. tbyreobyoideus n. bypoglossi. 



