SPEED OF RESPONSES OF VARIOUS MUSCLES OF CATS

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Abstract
The number of peaks of negativity found in the monophasic action potential of muscle have no definite relation to the number of peaks of tension appearing in the myogram. While various muscles are composed of a mixture of slow and fast elements, these elements in different muscles have different properties. Thus, there is no typical slow or fast fiber. There is a general parallelism between the speed of contraction of a muscle and the frequency of motor nerve stimulation needed for the appearance of the various stages of neuromuscular transmission. In the late stages there is a tendency for the faster muscles to develop less tension in % of that during the initial response than the slower muscles produced. The sequence of stages of transmission is general in striated nerve-muscle systems.

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