A practical treatise on the diseases of the ear including the anatomy of the organ . s also a set of muscles which are containedin its structure ; intrinsic muscles, as they are called by severalauthors. With a single exception these muscles run betweendifferent parts of the cartilage of the auricle and of the audi-tory canal. They are all muscles of animal life, but they are veryslightly developed, and are therefore pale, and thin, and he closely upon the cartilage, and are inserted into itsfibrous covering by means of short tendinous fibres. They are sometimes absent. It is possibl
A practical treatise on the diseases of the ear including the anatomy of the organ . s also a set of muscles which are containedin its structure ; intrinsic muscles, as they are called by severalauthors. With a single exception these muscles run betweendifferent parts of the cartilage of the auricle and of the audi-tory canal. They are all muscles of animal life, but they are veryslightly developed, and are therefore pale, and thin, and he closely upon the cartilage, and are inserted into itsfibrous covering by means of short tendinous fibres. They are sometimes absent. It is possible, although not * Lehrbuch der Anatomie des Menschen, Bd. II, p. 517. ANATOMY OF THE AUEICLE. 57 certain, that they always exist at birth, but that they subse-quently atrophy from want of use. Two of these intrinsic muscles of the auricle belong to thecartilage of the auditory canal, the remainder to the former occasionally run over into the latter. 1. Tragicus,—This muscle lies on the anterior surface ofthe anterior wall of the cartilage of the auditory canal, near. \ M 5 Muscles of the External Ear. After Henle. M. Meatus auditorius extemus. H. Spine of the helix. 1. Attollens, or Levator aurem. &Helicis major. 3. Helicis minor. 4. Tragicus. 5. Anli-tragicus. the upper and the lateral border. It is quadrangular in shape,and nearly as long as it is broad. It is composed of parallelfibres running nearly in a vertical direction. (See Fig. 3, 4.)2. Anti-tragicus.—This muscle lies on the posterior surfaceof the posterior wall of the cartilage of the meatus. (SeeKg. 3.) 58 ANATOMY OF THE AUEICLE. 3. Helicis Minor. Henle says that this is the most con-stant of the muscles of the auricle, and that it is often thestrongest of the intrinsic muscles. It is a fan-shaped muscle,and is found on the lateral surface of the helix between itsroot and spine. (Fig. 3, 3.) 4. Helicis Major.—This muscle runs over the anterior mar-gin of the helix, and is only loosely connected wi
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