A Manual of Diseases of the Nose and Throat

A Manual of Diseases of the Nose and Throat

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 edition. Excerpt: ...cushion or tubercle of the epiglottis. The mucous membrane between the arytenoid cartilages is stretched when they are separated, and folded double when they are approximated. Bounded by the superior and inferior vocal cords are two deep oval depressions, one on each side of the glottis, named the sinuses or ventricles of the larynx, and leading upwards from the anterior parts of these depressions, external to the superior vocal cords are two small culs-de-sac, named the laryngeal pouches or sacculi. The superior or false vocal cords, so named because they are not immediately concerned in the production of the voice, form on each side a free crescentic margin, bounding the corresponding ventricle of the larynx. The inferior or true vocal cords, the structures by the vibration of which the sounds of the voice are produced, bound the two anterior thirds of the aperture of the glottis. The mucous membrane covering them is so thin and closely adherent as to show the yellowish colour of the ligaments through it. Their free edges which are sharp and straight and directed upwards, form the lower boundaries of the ventricles, and are the parts thrown into vibration during the production of the voice. Their inner surfaces are flattened and look towards each other. The rima glottidis is an elongated aperture situated anteriorly between the true vocal cords, and posteriorly between the bases of the arytenoid cartilages, forming a N long narrow slit, slightly wider in the centre when nearly closed, as in the production of the voice; when moderately dilated, as in easy respiration, its shape is that of a long triangle; while in its fully dilated condition it is lozengeshaped (the posterior sides being formed by the inner sides of the bases of the arytenoid...
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Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236644514
  • 9781236644510