Bulletin of Experimental Biology and Medicine

, Volume 56, Issue 2, pp 827–830 | Cite as

Efect of load and initial length on the work of the muscle trabecula

  • M. G. Udel'nov
  • A. P. Fedorova
Physiology
  • 17 Downloads

Summary

A study was made of the changes occurring in trabeculae during working effort in response to various loads in relationship to the initial length. For this purpose, a longitudinal trabecula of the frog's auricle (stimulated by the sinus pacemaker) was used. The trabecula was isolated from the distal end. The experimental results demonstrated that with various loads optimal working effects could be obtained only with corresponding initial lengths of the trabecula. The latter proved incapable of even a slight working effort at the initial length with its distal end made free. Contraction of the trabecula with the minimal load becomes possible only after preliminary slight stretching.

Keywords

Public Health Initial Length Minimal Load Working Effect Muscle Trabecula 

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Literature Cited

  1. 1.
    V. V. Parin and F. Z. Meerson. Essays on the Clinical Physiology of the Circulation [in Russian]. Moscow. 1960.Google Scholar
  2. 2.
    M. G. Udel'nov and A. P. Fedorova. Vestn. MGU, 4 (1963).Google Scholar
  3. 3.
    M. de V. Cotten, Am. J. Physiol., 1953, Vol. 174, p. 365.Google Scholar
  4. 4.
    M. de. V. Cotten and E. Bay, Am. J. Physiol., 1956, Vol. 187, p. 122.Google Scholar
  5. 5.
    J. P. Holt, Circulat. Res., 1957, Vol. 5, p. 281.Google Scholar
  6. 6.
    L. N. Katz, Physiol. Rev., 1955, Vol. 35, p. 91.Google Scholar
  7. 7.
    R. F. Rushmer, Physiol. Rev., 1955, Vol. 35, p. 138.Google Scholar
  8. 8.
    R. F. Rushmer, Mod. Conc. cardiov. Dis., 1958, Vol 27, p. 473.Google Scholar
  9. 9.
    R. F. Rushmer, Cardiovascular Dynamics. Philadelphia, 1961.Google Scholar
  10. 10.
    E. H. Starling. The Linacre Lecture on the Law of the Heart. London, 1918.Google Scholar

Copyright information

© Consultants Bureau Enterprises, Inc. 1964

Authors and Affiliations

  • M. G. Udel'nov
    • 1
  • A. P. Fedorova
    • 1
  1. 1.Department of the Physiology of Animals and ManM. V. Lomonosov Moscow State UniversityMoscowUSSR

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