Atlas and abstract of the diseases of the larynx / L. Grünwald ; edited by Charles P. Grayson.

  • Grünwald, L.
Date:
1898
Catalogue details

Licence: Public Domain Mark

Credit: Atlas and abstract of the diseases of the larynx / L. Grünwald ; edited by Charles P. Grayson. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    (Plate 2, Fig. 1). In some cases the larynx may be BO obliquely placed—either from pathological causes or as an individual peculiarity—that it partly disappears under the epiglottis (Plate 2, Fig. 2); in others, abnormal growths may cut oil' part of the image above (Plate 2, Fig. 3; Plate Hi, Fig. 1 ) and behind (Fig. 15). Ordinarily the light strikes the larynx from behind ; but in Killian's posture, where the operator applies the mirror from below, making the patient bend well forward, the image is taken more from the front. Consequently more is seen of the lingual surface of the epiglottis and less of the anterior portions of the true vocal cords; on the other hand, their posterior attachment can be plainly seen, as well as the entire trout of the cricoid cartilage, but no part of its posterior surface (Plate 1, Fig. 1). p.e. Fig. 11. In phonation (Fig. 11) the epiglottis is raised in front, so as to bring the petiolus, p.e., into view. The arytenoid cartilages approach each other, so that the interarytenoid space almost disappears; the true and the false vocal cords also approach the median line and lie in so-called juxtaposition. The glottis is reduced to a narrow, spindle- shaped chink which is barely visible, the posterior ex- tremity coming in relation with the vocal processes. This is the image of the so-called chest-voice. In the production of head or falsetto notes the glottis is even more tightly closed behind, but gapes wide apart in