Summary
The maximal unloaded shortening velocity (Vmax) of smooth muscle cells isolated from the pedal retractor muscle ofMytilus was more than twice as large as that of the whole muscle, suggesting the presence of extracellular components which resist the contraction of the whole muscle. The Vmax of the isolated cells was almost constant at cell lengths ranging between 0.5 and 0.8310 (10, optimal length for tension generation) indicating that the intracellular resistance to contraction is negligible within this range of lengths.
References
Driska, S. P., Damon, D. N., and Murphy, R. A., Biophys. J.24 (1978) 525.
Mulvany, M. J., and Warshaw, D. M., J. gen. Physiol.74 (1979) 85.
Uvelius, B., Acta physiol. scand.97 (1976) 1.
Uvelius, B., and Gabella, G., Acta physiol. scand.110 (1980) 357.
Warshaw, D. M., and Fay, F. S., J. gen. Physiol.82 (1983) 157.
Ishii, N., and Takahashi, K., J. Muscle Res. Cell Motility3 (1982) 25.
Ishii, N., and Takahashi, K., Comp. Biochem. Physiol.70A (1981) 275.
Bagby, R. M., and Fisher, B. A., Am. J. Physiol.225 (1973) 105.
Abbott, B. C., and Lowy, J. J., J. Physiol.141 (1958) 385.
Edman, K. A. P., J. Physiol.291 (1979) 143.
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Ishii, N. Shortening velocity of single muscle cells isolated from a molluscan smooth muscle. Experientia 42, 810–812 (1986). https://doi.org/10.1007/BF01941532
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DOI: https://doi.org/10.1007/BF01941532