The laws and mechanics of circulation, with the principle involved in animal movement . cell-brood for compelling supplies into thebody to themselves through the action of the rhythmic centre,is seen in the increase of respiration and the action in the heartand arteries with the swell in the activities, rising and falling 178 NERVES CONNECTING WITH THE CELL-BROOD. with these, the two being in correspondence ; for in no otherway could it be effected. Moreover, the influence which thetissues exercise over circulation and respiration in abnormalconditions, so as to produce fever, notably traumati
The laws and mechanics of circulation, with the principle involved in animal movement . cell-brood for compelling supplies into thebody to themselves through the action of the rhythmic centre,is seen in the increase of respiration and the action in the heartand arteries with the swell in the activities, rising and falling 178 NERVES CONNECTING WITH THE CELL-BROOD. with these, the two being in correspondence ; for in no otherway could it be effected. Moreover, the influence which thetissues exercise over circulation and respiration in abnormalconditions, so as to produce fever, notably traumatism andinflammatory processes brought about by any means, is furtherproof of the intimate connection subsisting between , the accentuation of dicrotism in the cardiac and arterialtracings byanaemia, superinduced by any cause, whether byrecurrent hemorrhages or exhausting fevers—e. </., typhoidfever, in which the supplies are defective—affords eloquentproof of the power of the cell-brood for compelling therhythmic centre to respond. One more reference, and we shall. Fig. 58.—Horizontal Preparation of Nictitating Membrane of Frog in Chloride of Gold,showing the distribution of non-medullated nerve fibres to, a, capillary Coarse non-medullated nerve fibres giving off fine branches c, which form a plexusaround the vessel. (Oc, 3 ; obj., 8.)—Klein. have finished ; notably : It is a well-known fact that any cir-cumstance which should suddenly reduce arterial pressurewould accentuate dicrotism, bringing it out more conspicuouslyin all of the tracings. Now, then, as arterial pressure increasescirculation in the tissues, it follows that any reduction ofpressure would call for corresponding compensation, inorder to maintain circulation in the tissues up to the norm,and which can only be done by increasing the rhythmicalexpansions and contractions in the vessels, and hurrying res-piration ; hence the quick respiration in these cases and the NERVES CO
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