Series elasticity of urinary bladder smooth muscle

Author:

Alexander RS

Abstract

Loops of rat bladder were stretched between pins in vitro, supported by a clamp that could be suddenly shortened by activation of a solenoid to achieve a quick release of tension. The series elasticity measured in this fashion was found to follow an exponential course and to be modified by the rate of release, indicating a minor viscous component. Tissue length decreased and series elastic stiffness appeared to increase with muscle contraction, but no alteration in series elasticity was evident when the data were related to the tension existing in the tissue at the moment of quick release. Inactivation of the contractile system by removing calcium ion with ethylene glycol-bis-(beta-aminoethylether)-N,N'-tetraacetate (EGTA) similarly did not alter series elasticity when it was related to the tension existing in the tissue. Series elasticity during the stress relaxation following a stretch, and during the contracting and relaxing phases of rhythmic contractions, was also determined by tissue tension. The conclusion drawn is that contractile cross bridges do not contribute to the series elasticity measured in bladder tissue.

Publisher

American Physiological Society

Subject

Physiology (medical)

Cited by 20 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Continual models of the bladder tissue;The Brain–Bladder Axis in Tissue Growth and Remodelling;2021-07

2. Mechanics of Vascular Smooth Muscle;Comprehensive Physiology;2015-12-15

3. Frequency dependent viscoelastic properties of porcine bladder;Journal of the Mechanical Behavior of Biomedical Materials;2015-02

4. Investigations into Biomechanics of the Bladder;Biomechanics of the Human Urinary Bladder;2013

5. Challenges in Human Urinary Bladder Mechanics;Biomechanics of the Human Urinary Bladder;2013

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