Diseases of the larynx / by Dr. J. Gottstein ... trans. and added to by P. M'Bride.

  • Gottstein, Jacob, 1832-1895.
Date:
[1883]
Catalogue details

Licence: Public Domain Mark

Credit: Diseases of the larynx / by Dr. J. Gottstein ... trans. and added to by P. M'Bride. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    position of the cords by reflex action, snch as is present in the new- born animal, enabling it to squeak and whimper. In the third place, Krause attempted to follow the course of the degenerated nerve fibres in animals which had been successfully operated upon, and found that a considerable number of these passed through the corpora mammillaria (or albicantia). OBSERVATIONS ON THE DISTRIBUTION OF LARYNGEAL NERVES BY MANDELSTAMM AND WEINZWEIG. Unfortunately, the original papers by these two authors were not accessible to me, so that the short notice of their contents given here is gleaned from abstracts.* Mandelstamm's method consisted in dividing nerves and noting the consequent atrophy of muscles. The results so gained were controlled by experiments, in which stimulation was applied. He found that all animals which survived section of the recurrent for from three and a half to four months showed marked atrophy of the posterior crico-arytenoid muscle; the crico-thyroid remained normal, as also did the interarytenoid, and neither muscle showed microscopic changes; the thyro-arytenoid and lateral crico-arytenoid exhibited marked atrophy. On transverse section the portion of the thyro-arytenoid adjacent to the arytenoid was less atrophied than its anterior part, and those fibres which were adjacent to the free margin of the cord were intact. The immunity of the inter- arytenoid muscle is to be explained on the ground of its deriving nerve twigs from both recurrents. After section of the superior laryngeal nerve all the muscles, including the crico-thyroid, were found intact. Stimula- tion was then tried, and it was found that irritation of the recurrent had no effect on the crico-thyroid, which, however, contracted on stimulation of the superior laryngeal. The absence of atrophy after section was explained by the crossing of the fibres, which Mandelstamm was enabled to demon- strate in the guinea pig, so that each muscle receives its nerve supply from both superior laryngeal nerves. This crossing also takes place in the recurrent, and this fact accounts for the absence of atrophy after recurrent section in that part of the thyro-arytenoid muscle near the free margin of the cord. Stimulation of the recurrent and superior laryngeal seemed to have no influence on the interarytenoid muscle, and in a case in which both recurrents were cut this muscle remained intact ; in the same case the internal fibres of the thyro-arytenoids, on both sides, were also normal, so that probably the interarytenoid is innervated by the superior laryngeal, which may also send twigs to the thyro-arytenoid. Weinzweig in his paper demonstrated the crossing of nerve fibres in the posterior wall of the larynx in the human subject. * Monatsschrift fur Ohrenheilkunde, Kehlkopf, etc. Dec. 1SS4.