Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 6, 2025
Habitual activity of these centres implying, psychologically, habitual activity of thought, physiologically, a more active local circulation is therefore the best method at our disposal for permanently counteracting tendencies to irregular action in this centre, in the emotional ganglia lying in its vicinity, and in the vaso-motor nerves dependent upon it.
"Doc he runs his hand up and down along this high divide, and says he, 'Just like I thought, says he. 'The patient has suffered a distinct leeshun in the immediate vicinity of his vaseline motor centres." "You mean the vaso-motor centres," suggested Dan Anderson. "That's what I said," said Curly, aggressively.
The ganglionic nervous excitement coincident with the maturation of the ovule and the congestion of the uterus, is easily communicated to the vaso-motor nerves of the latter organ.
From the foregoing considerations, we believe, may be again inferred, first, that the radical difference which exists between the cerebral operations that result in thought, and those that accompany the evolution of emotion, probably depends upon the fact, that in the former central nervous action remains more or less localized on the surface of the cerebral hemispheres, while, in the latter, the great ganglia lying at the base of the brain, and hence nearer the vaso-motor centre, are called into play; second, that the effects of such action are more rapidly generalized throughout the nervous system, and, by causing the dilatation of the blood-vessels in the manner described, exhaust the central nervous system in a twofold manner, by a disturbance of its circulation, and by a direct depression of its nutrition, when the modifications of the circulation exaggerate the nutrition elsewhere.
And the dangers incident to the development of new activity in the ganglionic nervous system by the functions of the ovaries, the dangers of irregular circulation, vaso-motor spasm and paralysis, are to be averted by systematic physical exercise, that shall stimulate the spinal nerves, quicken the external circulation, and favor the development of muscles at the moment that their activity threatens to be overpowered.
Arising from the need of relief from consciousness and bodily exertion, the mechanism of sleep is still not well understood. Is there a toxic influence at work? is the body poisoned by itself, as it were, as has been postulated; is there a toxin of fatigue, or is there a "vaso-motor" reaction, a shift of the blood supply causing a cerebral anaemia and thus creating the "sleepy" feeling?
"The only change observed in these tissues is a reflex edema, excited apparently by pressure on the ciliary nerves and, probably, irritation of the vaso-motor fibers of the sympathetic." Lachrymal Gland. Hyper secretion due to reflex irritation. Cornea.
This supposition is confirmed by the occurrence of many vaso-motor phenomena that commonly follow emotion, but are rarely observed after even prolonged thought.
Now, since the power of thought and the power of the vaso-motor centre are equally paralyzed under these circumstances, it is more probable that the phenomena which most nearly resemble those of stimulation of the brain are either confined to some special part of it, whose activity is in antagonism to the rest, or else are really phenomena of exhaustion, and therefore come under another category.
In the sciatica that results from neuritis and perineuritis, there is marked tenderness on pressure due to the involvement of the nerve filaments in the sheath of the nerve, and there may be patches of cutaneous anæsthesia, loss of tendon reflexes, localised wasting of muscles, and vaso-motor and trophic changes. The presence of the reaction of degeneration confirms the diagnosis of neuritis.
Word Of The Day
Others Looking