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Transient Length Responses of Heart Muscle in Ba2+-Contracture to Step Tension Reductions

  • Yasutake Saeki
  • Toshimitsu Shibata
  • Chikako Sato
  • Keiji Yanagisawa
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 37)

Abstract

The transient length response of the cat papillary muscle in Ba2+-contracture to step tension reduction was found to comprise four different phases. It is tentatively suggested that the transient response is mostly determined by the kinetics of the attachment and detachment of cross-bridges between actin and myosin filaments, which vary appreciably with activation level of the muscle.

Keywords

Transient Response Heart Muscle Elastic Element Initial Tension Tension Reduction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Saeki, Y., Sagawa, K. and Suga, H. (1978). Dynamic stiffness of cat heart muscle in Ba2+-induced contracture. Circ. Res. 42: 324–333.PubMedCrossRefGoogle Scholar
  2. Saeki, Y., Sagawa, K. and Suga, H. (1980). Transient tension responses of heart muscle in Ba2+-contracture to step length changes. Am. J. Physiol. 238: H340 - H347.PubMedGoogle Scholar

Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Yasutake Saeki
    • 1
  • Toshimitsu Shibata
    • 1
  • Chikako Sato
    • 1
  • Keiji Yanagisawa
    • 1
  1. 1.Department of PhysiologyTsurumi University, School of Dental MedicineYokohama 230Japan

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