. The comparative anatomy of the domesticated animals. Veterinary anatomy. TEE MIDDLE EAR OB TYMPANUM. 841 that lining the pharynx by means of a cartilaginous canal—the Eustachian tube, which conveys the external air to the middle ear. We will glance briefly at the anatomical characters of the parts enu- merated, and which enter into the formation of the middle ear. 1. Membrana TympanL ituated on the external wall of the middle ear, which it separates from the bottom of the auditory canal, this membrane is oval in shape. It is thin, dry, and capable of vibrating. Its inner face, inclining inwa
. The comparative anatomy of the domesticated animals. Veterinary anatomy. TEE MIDDLE EAR OB TYMPANUM. 841 that lining the pharynx by means of a cartilaginous canal—the Eustachian tube, which conveys the external air to the middle ear. We will glance briefly at the anatomical characters of the parts enu- merated, and which enter into the formation of the middle ear. 1. Membrana TympanL ituated on the external wall of the middle ear, which it separates from the bottom of the auditory canal, this membrane is oval in shape. It is thin, dry, and capable of vibrating. Its inner face, inclining inwards and slightly convex, is adherent to the handle of the malleus. Its external face is slightly concave (towards the meatus). The circumference is fixed in a bony frame named the tympanal circle, which is sharply defined, but. Fig. RIGHT TYMPANIC CAVITY OF THE HORSE'S EAR; ANTERIOR PLANE, VERTICAL AND TRANSVERSE SECTION. A, Auditory canal; B, Membrana tympani; c, Malleus; d, Incus ; E, Os orbiculare; r, Stapes; g, Mastoid cells; H, Fenestra oralis; i, Vestibule; J, K, L, Outline of the semicircular canals ; M, Cochlea; N, Commencement of the tympanic scala. incomplete at its upper part, and enveloped by the mastoid cells, whose cavities radiate around this circle. Although very thin, this membrane is composed of three layers: a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chauveau, Auguste, 1827-1917; Arloing, Saturnin, 1846-1911; Fleming, George, 1833-1901. tr. New York. D. Appleton and company
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectveterinaryanatomy
