Neuroses of sensation of the pharynx and larynx, or sensory neuroses of the throat / by Louis Elsberg.

  • Elsberg, Louis, 1836-1885.
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: Neuroses of sensation of the pharynx and larynx, or sensory neuroses of the throat / by Louis Elsberg. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Krause* considers its relations so much in doubt that he terms itmLcleus ambiguiis^ but there are no good reasons for refusing assent to the proposition of Meynert® that it con- tributes its efferent fibres to the oblongata-portion of the eleventh pair, in other words, to that part of these nerves which through its subsequent fusion with the tenth pair innervates the muscles of phonation.) 3. The nucleus pJiaryngeus^ a mass of cells situated near the lateral field of the oblongata, which from its multipolar cells and the fact that it is found in best development in the levels of the ninth and tenth pairs is supposed to be devoted to the innervation of the pharyngeal muscles. There is a fourth nucleus, viz., the gelatinous substance with small nerve cells scattered around the ascending root of the fifth pair. Now, as the sub-ependymal nucleus is probably visceral and the deep nuclei in all likelihood motor, the sensory innervations naturally fall to this nucleus, which is documented as a tactile and trophic centre by its relations to the great cranial tactile nerve, the fifth. A fact which certainly strongly points to this conclusion is that while the spinal accessory nerve roots never pass through or receive accession from this fourth nucleus, the ninth and ten pairs do pass through and do receive such accession.'* Here then we may look for the tactile innerva- tions of the larynx and pharynx, and the field from which certain reflexes are mediated to the motor nuclei. The analogy with the spinal reflex structure would thus be com- plete; for the gelatinous head of the posterior horn of the cord being homologous with the gelatinous nerve nucleus ^ Krause, Allgem, und mikroskop. Anatomie. Hanover, 1876. ^ Meynert, Vom Gehirne der Saugethiere. Strieker’s Handbuch. ® Spitzka, “Architecture of Brain,” Journal of Nervoiis and Mental Diseases, 1880. ^ Meynert, op. cit.; Stilling, “ Ueber die Textur der Medulla oblongata, Erlangen, 1842. ; Spitzka, loc. cit.