The nature and faculties of the sympathetic nerve

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الصفحة vi - Viselli : 105 est modus in rebus, sunt certi denique fines, quos ultra citraque nequit consistere rectum.
الصفحة 46 - ... structure, and a capability of receiving and answering impulses. It excites involuntary motion primarily. If the impulses are strong, but still amount only to a perception, the ganglia can transmit them to the spinal marrow, and thence directly to the voluntary muscles; but if the impulses be stronger, and amount to pain, they may pass from the spinal marrow to the brain, and excite voluntary motion; or they may pass from the ganglia to the stomachic plexuses, and from these by the par vagum...
الصفحة 45 - The sympathetic nerve has several properties peculiar to itself, and some resembling the faculties of other nerves. It is, to a certain extent, an independent system, and is a source of peculiar power. It derives its general diffusive influence, or nervous element, from the other parts of the nervous system its branches communicate with. It has appropriate faculties, and is perceptive, and not sensitive, except in pain. Its ganglia have a power according to their structure, and a capability of receiving...
الصفحة 4 - ... functions of the ganglionic system. Mr. Swan's brief exposition consists of an interesting sketch of the structure of the sympathetic, as ascertained by the aid of comparative anatomy and of its physiology. The following passage will convey to the reader the general views entertained by the author. " The great object of the sympathetic nerve is to furnish the parts it supplies with an appropriate nervous excitement of such a quality as will insure their functions without disturbing any other...
الصفحة 17 - innate faculties" of the sympathetic, as Mr. Swan terms them, he conceives, that there are two distinct powers — " a diffusive influence, and a perceptive and motive faculty ;" the former, " which forms the element of the material portion of the nervous system, the sympathetic has the power of deriving from, and through, the cerebral and spinal nerves. It can have its powers depressed or exalted ; they are depressed when those of the brain and spinal marrow are low, and especially when the spinal...
الصفحة 18 - ... whether sound or morbid." As to " the perceptive and motive faculties, they are concentrated in, and have their specific powers limited to, any particular region by a ganglion or plexus ;" the quality of the perceptive faculty likewise depends on the structure of the ganglia, although its powers are capable of being further exalted or depressed by the state of the diffusive influence.
الصفحة 17 - IT will be necessary to inquire into the nature and extent of the innate faculties of the sympathetic, and the degree and manner in which these may be increased or diminished.
الصفحة 10 - In the first place the plan of distribution, making allowance for diversity in the form of the body, " preserves a very great similarity, because it corresponds almost entirely with the fifth and spinal nerves ;" the general principle is that, there is one ganglion to each pair of spinal nerves, but these may either remain distinct from each other, as in the cervical region of birds, where there is a small ganglion attached to each cervical nerve ; or they may be massed together, as in the superior...

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