. Electro-physiology . FIG. S3.—Rhythmical series of twitches from sartorius ; persistent closure of current; gradual increment of twitches. really can be obtained—the extended curve rather speaks in favour of this view than against it. How far it is really legiti- mate to draw inferences from this to the mode of action of weaker currents must provisionally be left undecided, just as it is not possible from our present experimental data to postulate the dis- continuous nature of the persistent closure contraction, although there is much to be said for it. The constant current, during its closu
. Electro-physiology . FIG. S3.—Rhythmical series of twitches from sartorius ; persistent closure of current; gradual increment of twitches. really can be obtained—the extended curve rather speaks in favour of this view than against it. How far it is really legiti- mate to draw inferences from this to the mode of action of weaker currents must provisionally be left undecided, just as it is not possible from our present experimental data to postulate the dis- continuous nature of the persistent closure contraction, although there is much to be said for it. The constant current, during its closure in cardiac muscle, thus produces a regular and invari- able series of rhythmical contractions, which also appear, at least under certain conditions, in striated skeletal muscle; and this is still more the case in smooth muscle. Engelmann (5) was the first to observe an appearance in the ureter of the rabbit, which may be regarded as the undoubted analogue of the facts under
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan
