. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. of mam- luaaUy is ired under e capacity bat wbicli nary quiet ibic inches, laled by a jonting to al {reserve) respiration . represents rmal quiet ..which can at 2,000 cc, of air that This will, )ly the elas- >ight, and a I the result r to expand idioation as r is scarcely and larger k
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. of mam- luaaUy is ired under e capacity bat wbicli nary quiet ibic inches, laled by a jonting to al {reserve) respiration . represents rmal quiet ..which can at 2,000 cc, of air that This will, )ly the elas- >ight, and a I the result r to expand idioation as r is scarcely and larger ktions to re> *ot. Very intityofair I sum of the bio inches), cirenlation, rooess in its eater move* THB BBSPIBATORY ST8TSM. Thb Rkspibatoby Rhtthm. 879 In man, and most of our domestic mammals, a definite rela- tion between the cardiac and respiratory movements obtains, there being about four to five heart-beats to one respiration, which would make the rate of breathing in man about sixteen to eighteen per minute. Usually, of course, the largest animab have the slower pulse and respiration; and this is an invariable rale for the varieties of a species, as observable in the canine race, to mention a well-known instance. The rate uf the respiratory movements is to some extent a measure of the ntpidity of the oxidative processes in the body, as witness the slow and intermittent breathing of cold-bloodeid animals as compared with the more rapid respiration of birds and mammals (Fig. 313). Palhiologiesl.—^Any condition that lessens the amount of re- spiratory surface, or diminishes the mobility of the chest-walls is usually accompanied by accelerated movements, but beneath this is the demand for oxygen, part of the avenues by which this gas usually enters, having been dosed or obsirnoted by the disease. So that it is not' suxprising that, in consequence of the effusion of fluid into the thoracic cavity, leading to the compression of the lung, the oppodte one should be called
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
