Symptoms of Visceral Disease a Study of the Vegetative Nervous System in Its Re
Symptoms of Visceral Disease a Study of the Vegetative Nervous System in Its Re
Francis Marion Pottenger
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In order to explain this tenderness as being produced by the spinal nerves, the afferent impulses would have to be transmitted to the upper thoracic portions of the cord, through the sympa- thetics which supply the heart; they would then have to be carried upward in the cord through intercalated neurons to mediate with the spinal nerves emerging from the second, third, and fourth cervical segments from which the sternocleidomastoideus and tra- pezius receive their final nerve supply. This latte...r would seem to be the more rational explanation, and, if correct, shows that the reflexes from the heart have, in part, the same indirect mediation with the spinal nerves as those from the lungs. So far, however, this path for the heart is not recognized. Cardiac Parasympathetic Reflexes. Of parasympathetic reflexes from the heart, I would mention the nausea which at times occurs in patients suffering from heart disease. Heart patients also very often complain a great deal of their digestive systems.
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