MANDIBULAR MUSCLES 



263 



muscle extending from the paramastoid process of the occipital bone to the posterior 

 border of the lower jaw; it is covered by the parotid gland. 



Fig. 265. — Mandibular anb Laryngeal Regions of Horse, after Kemoval of Skin and Cutaneus. 

 c, Brachiocephalicus : d, sterno-cephalicus; e, omo-hyoideus and sterno-hyoideus; h, buccinator; i, depressor 

 labii inf erioris : m, masseter; v, occipito-mandibularis; w, mylo-hyoideus; 3, posterior, 3, anterior, border of external 

 ear; SO', angle of jaw; 36, mandibular lymph-glands; 37, external maxillary vein; 39, facial continuation oi,37; 

 ,40, parotid duct; 44., parotid gland; 4^, prominence of chin; x, wing of atlas, (.\fter Elienberger-Baum, Anat. fur 

 Kiinstler.) 



Origin. — The paramastoid process of the occipital bone, in common with the 

 posterior belly of the digastricus. 



Insertion. — The posterior border of the ramus of the mandible. 

 Action. — To depress the lower jaw and open the mouth. 



