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, Excerpt from The London Medical Recorder: A Monthly Review of the Medical Sciences and of Subjects Relating to Public Health; June 15, 1882 Claude bernard's experiments in 1851, on division of the cervical sympathetic nerve, were the first to throw any light upon the subject of the functions and imperceptible actions of the vaso-motor nerves, which have been further elucidated by the researches of Cyon, Ludwig, and Von Bezold. They show that the circulatory system would'be capable of taking up double the amount of blood it normally contains, and that it accommodates itself to the blood in an irregular manner so that, according to necessity, a larger amount of blood can be supplied to the more important organs. Each alternation of temper, each operation of the intellect, requires a momentary ow of blood to the brain; and in a cen tral station, situated in a small part of the medulla oblongata, the vaso-motor nerves lie close together. From it issue the enormous impulses which set in motion the system of vessels. Lesser independent vaso-motor regulators are found in the spinal cord and outside the arteries. Such apparatus as the vaso-dilator nerves show the multiplicity of the aids which can here be called in; others, like the depressor of the heart, show what powerful levers can be applied, and how correctly and silently they are used. It is indeed a question in what pathological pro cess the vaso-motor nerves do not take a prominent part, every theory of fever and in ammation being connected with them, and the hemiplegia which has been cured being still recognisable from the altered pulse-curve. Some arteries only are dilated in com mencing aortic patency, whilst others resist the pressure of the systolic blow by the tonicity of their muscular coat. The unilateral blush of the pneumo nic and phthisical patient, and the higher tempera ture in one axilla of the former, are due to vaso motor disturbances, as are also cheyne-stokes respiration, diabetes, and some forms of albumin uria; and it would not be going too far to assume that those neuroses which are of short but severe duration, and are easily treated, undergoing relapses and communicated by irritation, are likewise due to vaso-motor disturbances in the central nervous system, such being chorea, epilepsy, tetanus, and cata. Lepsy. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."