A manual of diseases of the nose and throat . Diagrammatic representation of the action of the laryngeal muscles upon the arytenoid cartilages and vocal cords. (Schroetter.) A. Action of thyro-arytenoidei externi. B. Action of arytenoideus. C. Action of crico-arytenoidei postici. The thyro-arytenoidei interni relax the cords; and theary-epiglottici, when contracted, markedly narrow theentrance into the larynx. It must be remembered thatthis is not the glottis, for the entrance to the larynx isfrom a quarter to half an inch above the vocal mucous membrane of the larynx, except that ov
A manual of diseases of the nose and throat . Diagrammatic representation of the action of the laryngeal muscles upon the arytenoid cartilages and vocal cords. (Schroetter.) A. Action of thyro-arytenoidei externi. B. Action of arytenoideus. C. Action of crico-arytenoidei postici. The thyro-arytenoidei interni relax the cords; and theary-epiglottici, when contracted, markedly narrow theentrance into the larynx. It must be remembered thatthis is not the glottis, for the entrance to the larynx isfrom a quarter to half an inch above the vocal mucous membrane of the larynx, except that overthe vocal cords, is covered with ciliated columnar epithe-lium, The submucosa is made up of connective and 32 ANATOMY OF UPPER RESPIRATORY TRACT. elastic tissue, and contains mucous glands and somelymphatic tissue. The mucosa is very loose over thearytenoids and the ventricular bands, thus accountingfor the ease with which it becomes edematous at theseplaces. A thick fold of mucous membrane, the ven-tricular band (see Plate VII., Figs. 1 a
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherne, booksubjectnose
