Post-nasal catarrh and diseases of the nose causing deafness : being vol. 1 of the third edition of Deafness, giddiness, and noises in the head / by Edward Woakes.

  • Woakes, Edward, 1837-1912.
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: Post-nasal catarrh and diseases of the nose causing deafness : being vol. 1 of the third edition of Deafness, giddiness, and noises in the head / by Edward Woakes. Source: Wellcome Collection.

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    my contention, respecting- the reflex relationship of the afferent and efferent elements of the vaso-motor system ; it would simply seem to imply that for convenience of pack- age, the functions of some of the ganglia of the sympathe- tic chain in man, are relegated in these animals to a zone of the spinal cord; or that these vaso-motor centres are not, in the animals in question, of sufficient importance in the economy to necessitate their individualisation as dis- tinct centres of the sympathetic chain. The anatomy of the sympathetic system, even in man, has many links to be supplied, v^^hile in the lower animals from which most of the inferences are derived, it is even more obscure. The range of my subject being limited for the most part to the upper ganglia of the series whose anatomy has been per- haps most studied, and the inferences arrived at being based on the phenomena exhibited in the human subject, these will be redeemed from whatever obscurity may in other regions and in the lower animals, be due to the causes above intimated. While the foregoing remarks are intended to implicate the sympathetic chain of ganglia in the ordinary function of nutrition, and such modifications of it as imply inflam- matory processes, including also those of hypertrophy and atrophy of tissues; there still remains for explanation the dominion of the general vaso-motor centre, which if it should ever be localised, will probably be found to deter- mine the site and regulate the amount of change in vessel calibre resulting from impressions arising directly in the sensorium; of such sort are blushing, and its opposite, blanching of the integument, due to mental emotions, and some states of reverse peristalsis likewise associated with mental disturbance, with others of like kind, which demand no further notice at this time. The accompanying scheme will illustrate the idea ot re- flex vaso-motor action as attempted to be explained m the foregoing remarks. r i • u It remains to consider briefly, some of the proofs which appear to me to justify the position now sought to be esta- blished, viz., that an excito-vaso-motor function exists between the afferent and efferent elements of a given sympathetic ganglion, and that these latter organs exer- cise a correlating function, in regard of such operations as