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Updated: May 23, 2025
Our first bit of work proved to be the examination of a number of soldiers who had been in contact with a case of cerebro-spinal meningitis, to detect "carriers" of the specific germ. Then material of all sorts began to come in for examination from the casualty clearing stations, field ambulances, sanitary and medical officers, rest stations and other places.
This point is known as the node of Ranvier. These are known as the non-medullary fibers. They are gray, while the ordinary medullary fibers are white in appearance. The white nerve fibers form the white part of the brain and of the spinal cord, and the greater part of the cerebro-spinal nerves.
Whenever it is so the activity of the ganglionic system must be in excess, or that of the cerebro-spinal system must be deficient. It is true that among the women of highly civilized societies, one or both of these conditions very frequently exist, but it is then as truly abnormal as is the dyspepsia and spleen equally prevalent.
Thus, in general, the sympathetic system, while intimately connected with the cerebro-spinal, forms a close network of nerves which specially accompany the minute blood-vessels, and are distributed to the muscles of the heart, the lungs, the stomach, the liver, the intestines, and the kidneys that is, the hollow organs of the body. The Functions of the Sympathetic System.
Certain cases of hæmorrhage into the lateral ventricles of the brain also simulate tetanus, but an analysis of the symptoms will prevent errors in diagnosis. Cerebro-spinal meningitis and basal meningitis present certain superficial resemblances to tetanus, but there is no trismus, and the spasms chiefly affect the muscles of the neck and back.
Strange and terrible diseases attacked some of them, though the poisonous microbes were checked by vigilant men in laboratories behind the front before they could spread an epidemic. For the first time men without science heard the name of cerebro-spinal meningitis and shuddered at it.
After working in the office of the Director of Medical Services for a couple of weeks straightening out the records in regard to typhoid inoculation, and cerebro-spinal meningitis, and in purchasing the necessary equipment, I received word that the laboratory was to go to the front immediately.
These symptoms, which have usually been attributed to the coagulating action of the salt upon the blood, have been shown not to depend upon that change, which, indeed, does not occur, but upon a direct paralyzing operation upon the cerebro-spinal centers and upon the heart; but the latter action is subordinate and secondary, and the former is fatal through asphyxia. Dispensatory. Alf.
But beyond a certain point in the ascending scale, the exactness of this correlation ceases. The muscles and bones are smaller; yet the structure of the cerebro-spinal organs, especially the brain, becomes more elaborate; and hence the control exercised over the functions of the ganglionic system is more complete, although the relative size of the two systems is not much changed.
Such control or predominance is manifested in the following ways: First. The functions of animal life, presided over by the cerebro-spinal system, become proportionately more important than those of vegetative or nutritive life, carried on by the ganglionic.
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