MUSCLE VOLUME CHANGES: RELATION TO THE ACTIVE STATE.

R J BASKIN; P J PAOLINI

doi:10.1126/science.148.3672.971

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PubMed · 14277840

MUSCLE VOLUME CHANGES: RELATION TO THE ACTIVE STATE.

R J BASKIN·P J PAOLINI

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Abstract

The volume of a frog sartorius muscle increases during a single twitch and subsequently decreases. The magnitude of volume change is 10(-5) cm(3) per gram of muscle. The time courses of change in volume and of onset of tension vary with temperature in a similar way, which implies a relation between the volume changes and the contraction mechanism. The character of the change depends upon the initial length of the muscle: the greatest decrease accompanies an isometric twitch at reference length. Treatment of the muscle with an iodide Ringer solution prolongs the active state and the volume change. These results suggest a correlation between the volume changes and the active state.

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Animals Anura Electrophysiology Muscle Contraction Muscle, Skeletal Muscles Physiology Ranidae Research Temperature ELECTROPHYSIOLOGY EXPERIMENTAL LAB STUDY FROGS MUSCLE CONTRACTION PHYSIOLOGY Journal Article

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R J BASKIN, P J PAOLINI. 1965-05-14. MUSCLE VOLUME CHANGES: RELATION TO THE ACTIVE STATE.. https://doi.org/10.1126/science.148.3672.971

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