On the comparative merits of Dr. Bellingeri's and Sir C. Bell's writings and opinions on the functions of the fifth and seventh pairs of cerebral nerves / by G. Negri.
- Negri, Gaetano.
- Date:
- 1835
Licence: Public Domain Mark
Credit: On the comparative merits of Dr. Bellingeri's and Sir C. Bell's writings and opinions on the functions of the fifth and seventh pairs of cerebral nerves / by G. Negri. 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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![00 ct involuntariis, -et orgoniccc vita*, ali- cubi inservire. Prteterea certe inservit vitie organicoi, qmim cellulis masloideis, mem bra n U2 tympani, longiori incudis cruri, circa foramen j ugulare, musculis tubuy eustacbiaiuB inscrtis filamenta elargitur. Animadvertam vero, non ut unicum nervum habendum esse septi- liium par, sed duplici constare portione, majon scilicet, ct minor! a Wrisbergio detecta, qute distinctam liabet originem, et structuram, iter quoque sejuuctum a majoriipsius nervi portione. Suspicurer igitur, paucas involuntarias, quas exe- quitur actioncs septimum par, ab hue minori portione peudere; quod melius fortasse innotesceret, si ipsius distribu- tiones quoque nota essent. Revera, co- gnita minoris quinti portionis distri- butione, diversis a majori portione actionibus famulari demonstravimus ; voluntatis enim minor obedit imperio, non ita major. Iusuper, minorem nervi facialis portionem famulari organicis functiouibus, conjectura quadantenns assequi possumus; ipsius enim filamenta partim a substantia pontis, partim vero ex corporibus olivaribus prope originem glosso-pharyng-ei enasci videntur ; dixi- mus vero superius, nos opinari, inservire vitae organic® nervea filamenta, qute a corporibus olivaribus oriuutur. Quem- advnodum igitur portio major quinti paris, meo quidem judicio, inservit vitae organic®, minor vero ipsius portio vit® animali dicatur; ita, contrana ratione, portio major septimi vita; animali, mi- nor autem portio vita; organicce famula- tur: (|uo admisso, dabo etiam et per fila- menta minoris portionis nervi facialis moveri musculos iuternae auris. Quum igitur diversa sit origo, et structura, di- versum quoque officium portionis minoris quinti, et septimi puris a majori utrius- que portione, merito utramque portio- nem distinctam nervorum par consti- tuere puto. § LII. “ Concludimus igitur, nervum facialem voluntaries fere omnes in ca])itc exequi motus, sensui animali in facie, et cello prteessc, risum jiroduccre, simulata exprimere animi pathemata, animales absolvere sympatliias; bine etiam animadvcrlimus, cur tam frequentibus auastomosibus, plexibusque rami inter sc, cumque vieiius nervis conncctantur, ut in anatomc vidimus. Agere in mas- ticationc, deglutitione, voce, loquela, et cantu, et quinti adinstar aliquaxn om- nium seusuum organorum partcm con- stituere ; internis scilicet, externisque auribus ramos tribuit, per nalpebras tu- tatur oculos, ingreditur inferiores nares, linguam insigni ramo ditat, animalem tactum in cute absolvit, ct ubique in hiscc partibus inservit functionibus vitie animalis. “ Dixi, et sistam, longius quidem pro ingenii viribus, breviter si aumirandum Crcatoris opus spcctemus ; bac enim ra- tionc nunquam esset sermoni finis.” Thus ends the Third Part of Beilin- geri’s Dissertatio, wliicb contains prin- cipally the physiology of the fifth and seventh pairs of nerves. My next shall be the concluding article. Concluding Remarks. From what has been published in the preceding pages, on the physiology both of the fifth and seventh pairs of cerebral nerves, enough, I believe, of Bellingeri’s Dissertatio Tnauguralis has been laid be- fore the public to exhibit a full and accu- rate idea of the Italian physiologist’s doctrine on the functions of those nerves. Let him now be judged impartially, but only after his own words and opinions, anti not through the highly improper and erroneous statements of incompe- tent critics. Before, however, leaving this ques- tion, I must direct the attention of the medical profession to some other impor- tant points, so forcibly insisted upon by Mr. Alexander Shaw, in his already well- known article. “ The fundamental prin- ciple,” he says, “ which pervades every sentence of Sir Charles Bell’s works, is this (and it was announced in the un- published tract printed in 1811)— that a single nerve cannot bestow both motion and sensation ; whenever they are combined, it is a sign that the nerve is compound—that it originates hy two distinct roots from the brain, or spinal marrow.”—“ It is not to he sup- posed that this principle rested alto- gether upon the experiments on the nerves of the face. It was not with these nerves that Sir Charles Bell began his investigations. It is well known that he commenced by experiments on the spinal nerves. It was after having ascertained by experiments (first made so far hack as 1811, and repeated in March 1821), that the two roots of these spinal nerves possess distinct endow- ments, that he teas led to examine the](https://iiif.wellcomecollection.org/image/b22371746_0032.jp2/full/800%2C/0/default.jpg)
