298 



THE MUSCLES OF THE OX 



The genio-hyoideus is more developed. 



The kerato-hyoideus has an additional attachment on the middle cornu of the 

 hyoid bone. 



The hyoideus transversus is bifid. 



The sterno-thyro-hyoideus has no intermediate tendon and is thicker. 



The omo-hyoideus arises as a thin band from the fascia over the third and 

 fourth cervical vertebrae. It blends here with the rectus capitis anterior major. 

 The occipito-hyoideus is thick. 





Fig. 209. — Muscles of Head of Ox, Ventral View. 

 rf, d' , Sterno-cephalicus; e, omo-hyoideiis; g, zygomaticus; h, buccinator; i, depressor labii inferioris; 

 k, orbicularis oris; m, masseter; n, parotido-auiicularis; o', zygomatico-auricularis; w, mylo-hyoideus; 1, concha, 

 convex surface; 2, anterior border of concha; SO', angle of jaw; 39, facial vein; 44, parotid gland; ^5, lower lip; 

 48, angle of mouth; 60, 60', submaxillary gland; 59, larynx; 2, wing of atlas. (After Ellenberger-Baum, Anat. 

 fiir Kiinstler.) 



Muscles of the Neck 

 a. ventral group 



The sterno-cephalicus consists of two muscles. They arise from the manu- 

 brium sterni and fii-st rib. The superficial muscle (Stcrno-mandibularis) is inserted 

 on the anterior border of the masseter, the ramus of the mandible, and the buccal 

 fascia. The deep muscle (Sterno-mastoideus) crosses under the preceding and ends 

 on the mastoid process, the mandible, and, in common with the rectus capitis 

 anterior major, on the basilar process of the occipital bone. 



There are two scaleni. The scalenus ventralis (s. primse costse) arises on the 

 first rib and ends on the transverse processes of the third to the seventh cervical 



