. Principles of human physiology : with their chief applications to pathology, hygiene, and forensic medicine : especially designed for the use of students. nervous systemof the Articulata, which may be regarded as corresponding with the sensoryand locomotive ganglia of the Mollusca; namely, the cephalic, the pedal,(and in some instances) the palleal. We have next to inquire what we findcorresponding with the branchial ganglion. It is to be recollected that therespiratory apparatus of Insects is diffused throughout the whole body, sothat its presiding system of nerves must be proportionally ex
. Principles of human physiology : with their chief applications to pathology, hygiene, and forensic medicine : especially designed for the use of students. nervous systemof the Articulata, which may be regarded as corresponding with the sensoryand locomotive ganglia of the Mollusca; namely, the cephalic, the pedal,(and in some instances) the palleal. We have next to inquire what we findcorresponding with the branchial ganglion. It is to be recollected that therespiratory apparatus of Insects is diffused throughout the whole body, sothat its presiding system of nerves must be proportionally extended; and weare, therefore, prepared to find the branchial ganglion of the Mollusca re-peated, like the pedal, in each segment. Besides the nervous trunks pro-ceeding from the ventral cord at its ganglionic enlargement, we find, in mostof the Articulated classes, a series of smaller nerves, given off at interme-diate points, without any apparent swelling at the points of divergence. Theconnections of these are most distinctly seen in the thoracic region, just asthe Larva is passing into the Pupa state; for the cords of the ventral column Figr.
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Keywords: ., bookcentury1800, bookdecade1840, bookpubli, booksubjectphysiology
