. A practical treatise on medical diagnosis for students and physicians . ar form of the paralysis. 1. Paralysis of the Tensors of the Cord. The cricothyroid muscleis paralyzed ; the superior laryngeal nerve which supplies the muscle isaffected. The voice is deep and rough, and incapable of producing hightones. Usually the whole nerve is involved, and the result is ancesthesiaof the larynx and paralysis of the epiglottis. Laryngeal Examination. The epiglottis is fixed, and falls backagainst the tongue. The glottis forms a wavy line. Causal Disease. The condition occurs almost exclusively after
. A practical treatise on medical diagnosis for students and physicians . ar form of the paralysis. 1. Paralysis of the Tensors of the Cord. The cricothyroid muscleis paralyzed ; the superior laryngeal nerve which supplies the muscle isaffected. The voice is deep and rough, and incapable of producing hightones. Usually the whole nerve is involved, and the result is ancesthesiaof the larynx and paralysis of the epiglottis. Laryngeal Examination. The epiglottis is fixed, and falls backagainst the tongue. The glottis forms a wavy line. Causal Disease. The condition occurs almost exclusively afterdiphtheria. 2. Paralysis of the Closers of the Glottis, or Adductors of theCords. The muscles involved are the crico-arytenoideus lateralis, ary-tenoideus transversus, and the thyro-arytenoideus internus and nerve is the recurrent laryngeal. The symptoms are complete aphonia, coming on suddenly, and oftendisappearing as suddenly. Laryngeal Examination. During phonation the cords remain inthe inspiratory position. The paralysis may affect one or both
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