Diseases and injuries of the ear : their prevention and cure / by Charles Henry Burnett.

  • Charles Henry Burnett
Date:
1889
Catalogue details

Licence: Public Domain Mark

Credit: Diseases and injuries of the ear : their prevention and cure / by Charles Henry Burnett. Source: Wellcome Collection.

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    Fig. I. Diagram of the entire Auditory Apparatus of Man; right side; nearly natu- ral dimensions, (From Hearing, and How to keep it, by C. H. Burnett, M.D.) The front part of the auditory canal, the front half of the drum-mem- brane, and part of the Eustachian tube are supposed to be removed. 1, the side of the temple-bone cut through; 2, outer surface of the temple-bone; 3, upper wall of bony portion of hearing canal; 4, ligament holding the hammer-bone to the roof of the drum-cavity; 5, roof and upper part of the drum-cavity; 6, semicircular canals; 7, anvil-bone {incus); 8, hammer-bone (malleus)', 9, stirrup-bone {stapes); 10, cochlea (snail-shell); 11, drum-mem- brane cut across and looked at sideways; 12, isthmus of the Eustachian tube, in the naso-pharynx; 13, mouth of the Eustachian tube behind the nose; 14, the auditory or hearing canal; 15, lower wall of bony portion of the auditory canal; 16, lower wall of the cartilaginous part of the auditory canal at its junction with the bony portion; 17, wax-glands; 18, the lobule; 19, upper cartilaginous wall of the auditory canal; 20, the mouth of the auditory canal; 21, the antitragus. The middle ear is that part lying between the drum- head, or drum-membrane, and the internal ear (Fig. I., 5). In this cavity of the middle ear lie the three ossicles of hearing, or auditory bonelets (Fig. I., 7, 8, 9). In the internal ear is the nerve of hearing. This
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