. 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. mfan APPLICATIONS OF THE GRAPHIC METHOD. 909 The move- of other forms imitation. in an increase ion of its long 1 hnlk. are irritable. m>ugh a nerve, , electrical, and stive they must reciable time, effective when ition of the cur- ases: the latent falling energy, knd that of con- The
. 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. mfan APPLICATIONS OF THE GRAPHIC METHOD. 909 The move- of other forms imitation. in an increase ion of its long 1 hnlk. are irritable. m>ugh a nerve, , electrical, and stive they must reciable time, effective when ition of the cur- ases: the latent falling energy, knd that of con- The contrac- re accompanied Ltory character, iads to fatigue; waste'prodncts t that all proto- hange, and that ion of products )lled. lemical changes, some substance >f an alkaline or )d for the act of ig muscle, it may "t in actual oon- « vital processes nscle show that during ordinary sh precedes and the formation of Eation of muscle, ion of the blood. mm>:. (The contraction of a muscle, i^d the passage of a nervous impulse, ore accompanied by electrical changes. Whether cur- rents exist in uninjured muscle and nerve is a matter of con- troversy. All physiologists agree that they exist in muscle (and nerve) during functional activity. This electrical condi- tion Is termed the " negative variation " by those believing in currents of rest, and the " current of action ** by those holding opposite opinions. The current is of momentary duration, and is manifested during the latent period of muscle, in which also the chemical changes take place; so that a muscular contrac- tion must be regarded as the outcome of the events of the latent period, which is, therefore, though the shortest, the most important of the phases of a muscular contraction. (j>uring the passage of a constant (polarizing) cunent from a battery through a nerve, it undergoes a change in its irrita- bility and shows a variation in the electro-motive force of the ordinary nerve-current
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
