The central course of the nervus octavus and its influence on motility / by C. Winkler.

  • Cornelis Winkler
Date:
1907
Catalogue details

Licence: In copyright

Credit: The central course of the nervus octavus and its influence on motility / by C. Winkler. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

    186/256 page 182
    Fig. 20 iJ. A horizontal section tlirougli the entrance of the octavns-roots and the knee of tlie facial nerve. The section demonstrates the degenerated tractus Deiters ascendens, the degenerated fasciculus longitndinalis posterior and the transverse fibres, passing through the contralateral nucleus Deiters and the beginning of the contralateral tract of Deiters . with slight degeneration. Fig. 20 E. A horizontal section touching the exit of the Vti' nerve. It demonstrates the degenerate homolateral tract of Deiters round the facial root, and more distally the degeneration in tlie praedorsal tract and in the rubro- spinal tract. Fig. 20 E. A horizontal section touching the facial nucleus and olivary bodies, with degeneration in the three descendent longitudinal tracts, tlie praedorsal tract, the dsscending Deiteks tract, and the rubro-spinal tract. Fig. 21. Sections at different levels of the medirlla, to demonstrate the farther course of the descending tracts in the cord. In these preparations, the lesion tonches the fillet, and an injnry of the rnbro-spinal tract at the level of the issuing trigeminus-root cannot be excluded. Plate XVIII. Fig. 22 A—H. A series of frontal sections, through the central system of a rabbit, eleven days, after a transverse section through the left lateral trunk of the corpus trapezoides. In fig. 22 B—-D the injury of the system is indicated by the letter x. In fig. 22 a. The section falls through the corpora quadrigemina anteriora. In the right lateral fillet fibres to the ventral layer of the nucleus corp. quadr. posterioris are degeaernted. A slight transverse degenerated layer of fibres ventrally from the nucleus or the IV^ nerve is seen (Probst bundle). Fig. 22b. This section, through the proximal parts of the olivary bodies, is touching the ])roximal end (by x) of the incision. The corp. tra])e/,oides and the systema ventrale nervi octavi is nearly totally degenerated. Fig. 22 c. The section tonches the injury by x. Between the lesion auti the //aberrirendes Seitenstrangbiindel the intact medio-ventral end of the V'li spinal root is found. The dorso-lateral fibres of this root are sectioned and degenerated distally, as is seen in all distal sections. Mere, in the aberrirendes Seitenstrangbiindel, a tract degenerating distally is found (rnbro-spinal bundle), and the .slight degeneration in tiie des- cending tract of Deitkbs and in the praedorsal tract is evident. F'ig. 22 1). The section touches the entrance of the ventral octavus-root. Fig. 22 e. The entrance of the distal octavus root. F'ig. 22 F. A section through the proximal i , n n vthi i -u- oo V 1 T i 1 ' l't of tlie \II' nucleus. Fig. 32 G. A section through the distal | ^ Fig. 22 II. A section through the distal end of the oblongata. In fig. 22 D—H. The area's of the rubro-spinal tract, of the descending Iract of Deiters and of the praedorsal tract, are marked by degeneration in the dift'erent levels, where the section touches tiiem. In this case it is not probable that the I'ubro-spinal
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