The topographical anatomy of the head and neck of the horse / [O. Charnock Bradley].
- Orlando Charnock Bradley
- Date:
- 1923
Licence: In copyright
Credit: The topographical anatomy of the head and neck of the horse / [O. Charnock Bradley]. Source: Wellcome Collection.
80/248 page 64
![the larger branch—and, consequently, follows the lower border of the hyoid bone in company with the external maxillary artery. It passes medial to the hyo-glossal muscle and ends in the mucous membrane of the posterior part of the tongue, where it is concerned in the sense of taste. Filaments are furnished to the soft palate and the tonsil, and a branch unites with a part of the lingual nerve. N. HYPOGLOSSUS.—Though a better opportunity for the examination of the hypoglossal ^ or twelfth cerebral nerve will occur later, the dissector should note certain features of its course before the parts are further disturbed. In the present dissection the nerve appears between the external carotid artery and the stylo-hyoid muscle. It follows the lower border of the external maxillary artery as far as the origin of the lingual, where it crosses the medial face of the external maxillary to gain the surface of the hyo-glossal muscle. Continuing its course medial to the mylo-hyoid muscle and parallel to the lower border of the stylo-glossal muscle on the one hand and the submaxillary duct on the other, it gains the substance of the tongue, to the muscles of which it carries motor impulses. Dissection.—Reflect the stylo-glossal and hyo-glossal muscles. M. GENIOGLOSSUS.—The genio-glossal muscle is semi-penniform and flattened laterally. It lies against its fellow-muscle—from which it is separated only by loose connective tissue containing a certain amount of fat—and has a distinct tendinous lower border bv which it is attached %/ to the symphysis of the mandible. The posterior part of the muscle is fleshy and attached to the body and small cornu of the hyoid bone. From its lower border the fibres of the muscle pass upwards in a radiating manner to gain the substance of the tongue, some curving forwards into the free portion of this organ. M. CERATOHYOIDEUS.—The cerato-hyoid is a small muscle consisting of fibres running from the thyroid cornu of the hyoid bone to the small and great cornua of the hyoid bone in the neighbourhood of their union. A better view of the muscle will be obtained later. A. LINGUALIS.—The lingual artery has been followed to its dis¬ appearance under the edge of the hyo-glossal muscle (page 60). Its further course can now be examined. While under (medial to) the hyo-glossal muscle, the artery lies in succession upon the cerato-hyoid muscle, the small cornu of the hyoid bone, and the genio-glossal muscle. It is continued forwards to the tip 1 vw6 (hypo) [Gr.], under. yXwo-cra (glossa) [Gr.], the tongue.](https://iiif.wellcomecollection.org/image/b29820066_0080.jp2/full/800%2C/0/default.jpg)
