Summary and Conclusions
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(1)
The similarity of the effects of ions on the protoplasmic viscosity of simple organisms and that on unstriated muscle suggest that the latter consists of a viscous protoplasmic non-contractile element. The similarity of the reactions of isolated myosin strips and isolated muscle suggests that it contains a contractile element. This view is supported by (a) the differential action of drugs, (b) viscous elastic properties of plain muscle, and by its histological picture.
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(2)
Similarity of the responses of isolated muscle and isolated myosin suggests that plain muscle can contract without the use of oxygen.
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Communicated by Prof. A. Subba Rau,b.a., d.sc. (Lond.),f.r.m.s., f.a.sc.
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Singh, I. Visco-elastic properties and contraction of unstriated muscle. Proc. Indian Acad. Sci. 18, 53–57 (1943). https://doi.org/10.1007/BF03049648
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DOI: https://doi.org/10.1007/BF03049648