Human physiology . FIG. 70.—Tracing of rhythmical and periodic movements obtained in the pyloric region, afterextirpation of caeliac plexus. (Ducceschi.) action of the spinal centres which are simultaneously trying toinduce vomiting, coine into play. In any case, it is certain thatthe respiratory centres of the bulb are quite distinct from thevomiting centres. In fact, when the conditions for vomiting fail. Fi<;. of periodic movements in cardiac region, after extirpation ofcaeliac plexus. (Ducceschi.) owing to central lesions, an excessive tachypnea can be on the ot
Human physiology . FIG. 70.—Tracing of rhythmical and periodic movements obtained in the pyloric region, afterextirpation of caeliac plexus. (Ducceschi.) action of the spinal centres which are simultaneously trying toinduce vomiting, coine into play. In any case, it is certain thatthe respiratory centres of the bulb are quite distinct from thevomiting centres. In fact, when the conditions for vomiting fail. Fi<;. of periodic movements in cardiac region, after extirpation ofcaeliac plexus. (Ducceschi.) owing to central lesions, an excessive tachypnea can be on the other hand abdominal compression, the synchronouscontraction of diaphragm and abdominal muscles, intervenesactively in the production of vomiting, we must, in order tosustain the doctrine of a special unitary centre for vomiting also 204 PHYSIOLOGY CHAP. show the existence of a centre for abdominal compression, closelyconnected with the former, in which no one has yet succeeded. Another fact worth noting, which may serve as a point ofdeparture for further work, is that observed by Ducceschi aftersection of the vagi and caeliac plexus, as performed on dogs underFanos directions. While on section of the vagi there is, accordingto Ducceschi, no very striking modification in the form and courseof the normal movements of the stomach, excision of the caeliacplexus, which sends branches into the stomach
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
