288 ELEMENTARY ANATOMY. [LESS. 



The omo-hyoid is a long digastric muscle which takes 

 origin from the hyoid and is inserted into the upper margin 

 of the scapula. 



The anterior scalenus lies deep at the side of the neck. 

 It springs from the parapophyses of the cervical vertebrae 

 (third to sixth), and is inserted into the first rib. 



The middle scalenus springs from the diapophyses of the 

 cervical vertebrae, and also goes to the first rib. 



The posterior scalenus arises from the diapophyses of the 

 last two or three cervical vertebrae, and is inserted into the 

 second rib. 



The rcctns capitis anticus major arises from the parapo~ 

 physes of the (third to sixth) cervical vertebrae, and is in- 

 serted into the basi-occipital. 



The rectus capitis anticus minor springs from the side of 

 the atlas, and also goes to the basi-occipital. 



The rectus lateralis is a short muscle interposed between 

 the transverse process of the atlas and the jugular process of 

 the occipital bone. 



The longus colli is attached to the front of the spine, con- 

 necting the centra and transverse processes of the vertebrae 

 from the atlas down to the third dorsal. 



FIG. 266. MUSCLES OF THE RIGHT HALF OF THE PHARYNX, seen from behind. 



4, sterno-thyroid cut near its insertion and raised by a hook ; 2, median raphe, 

 where the pharyngeal constrictor muscles of the right and left sides meet 

 together behind ; 3, stylo-pharyngeus ; 4, superior constrictor of the pharynx ; 

 5, middle Constrictor ; 6, inferior constrictor; 7, buccinator; 8, Cut end of the 

 Stylo-glossus ; 9, cut end of the hyoglossus ; 10, genio-hyoid. 



The constrictors of the pharynx are muscles which enclose 

 the alimentary canal in the region of the throat : they are 

 three in number (inferior, middle, and superior}, and spring 



