. Diseases of cattle, sheep, goats and swine. Veterinary medicine. .314 RESPIRATORY APPARATUS. scarcely be examined except by inspection, external palpation, internal digital palpation, and auscultation. External examination presents no difficulty, and enables one to detect lesions around or near the larynx. Palpation reveals the existence of oedematous swellings, enlarge- ments of the retro-pharyngeal lymphatic glands, inflammatory en- gorgements, etc. Internal digital examination, like examination of the pharynx, can only be performed after very firmly fixing the animal in position, and inse
. Diseases of cattle, sheep, goats and swine. Veterinary medicine. .314 RESPIRATORY APPARATUS. scarcely be examined except by inspection, external palpation, internal digital palpation, and auscultation. External examination presents no difficulty, and enables one to detect lesions around or near the larynx. Palpation reveals the existence of oedematous swellings, enlarge- ments of the retro-pharyngeal lymphatic glands, inflammatory en- gorgements, etc. Internal digital examination, like examination of the pharynx, can only be performed after very firmly fixing the animal in position, and inserting a gag in the mouth. The hand is introduced, palm downwards, and passed as far as the. Fig. 165.—Manual examination of the larj^nx in the ox. pharyngeal cavity. The index finger can then easily be slipped into the glottis. Exploration must be effected rapidly and without violence. It reveals the condition of the glottis, the presence, position and form of growths like myxomata and of new tissues, due to the presence of actinomyces, as well as tuberculous vegetations or ulcerations. By auscultation we discover the presence of normal or abnormal laryngeal sounds—roaring, whistling, or bubbling sounds, etc. Trachea. The trachea may be examined by palpation and auscultation. Palpation reveals the degree of sensitiveness, abnormalities in position or form, the presence of peripheral inflammations, fractures of rings, etc. Auscultation indicates whether the tracheal sound be normal or otherwise, or accompanied by abnormal sounds, like mucous rales, or by pathological sounds conveyed from the 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 Moussu, Gustave, 1864-; Dollar, John A. W. , joint author. New York, W. R. Jenkins
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