. The anatomy of the domestic animals. Veterinary anatomy. 346 THE MUSCLES OF THE OX MANDIBULAR MUSCLES The masseter is not so large as in tlie horse; a considerable part of it arises on the facial tnlxTositj- and is directed oljliquely backward and downward, so that it would draw the lower jaw forward as well as upward. The temporalis conforms to the temporal fossa, and is tlierefore longer and entirely lateral in iiosition. The pterygoideus medialis arises from the lateral surface of the perpendicular part of the palatine bune and from the pterygoiil process. Since the origin is nearer. Fig.
. The anatomy of the domestic animals. Veterinary anatomy. 346 THE MUSCLES OF THE OX MANDIBULAR MUSCLES The masseter is not so large as in tlie horse; a considerable part of it arises on the facial tnlxTositj- and is directed oljliquely backward and downward, so that it would draw the lower jaw forward as well as upward. The temporalis conforms to the temporal fossa, and is tlierefore longer and entirely lateral in iiosition. The pterygoideus medialis arises from the lateral surface of the perpendicular part of the palatine bune and from the pterygoiil process. Since the origin is nearer. Fig. .302.—Muscles of Head of Ox; Ventral View. (f, d', ; f, omo-hyoideus; g, zygomaticus; A, buccinator: i", depressor labii inferioris; ^.orbicularis oris; m, masseter; n, parotido-auricularis; o', zygomatico-auricuiaris; w, niyio-hyoideus; /, concha, convex surface: 2, anterior border of conclia; 30\ angle of jaw; SO, facial vein; 44- parotid gland; 4o, lower lip; 4S, angle of mouth: 50, 50', mandibular gland; 59, larynx; X. wing of atlas. (After Ellenberger-Baum, Anat. fiir Kiinstler.) the median plane and the insertion further from it than in tlie horse, the nniscle pro- duces more marked lateral movement of the mandilile. The pterygoideus lateralis is flattened transversely, wide and thin in front, narrower and thicker behind. It has an extensive origin in the pterygo-palatiue fossa, where it is ]3artl>' coveretl by the pterygoideus meilialis. The occipito-mandibularis is al)sent. The digastricus lias a tendinous origin on the paramastoid process of the occipital l)one; its Ijellies are short and thick. The intermediate tendon is round and thick; it does not perforate the stylo-hyoideus. The anterior bellies are connected beneath the root of the tongue by a layer of transverse muscle-fibers termed the transversus Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability -
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectveterinaryanatomy
