EFFECT OF MECHANICAL VIBRATION ON ACTIVE TENSION IN THE LONGITUDINAL RETRACTOR MUSCLE OF A SEA CUCUMBER STICHOPUS JAPONICUS
نویسندگان
چکیده
منابع مشابه
Effect of Mechanical Vibration on Active Tension in the Longitudinal Retractor Muscle of a Sea Cucumber Stichopus Japonicus
1. The effect of mechanical vibration on active tension in an echinoderm somatic smooth muscle was studied using the longitudinal retractor muscle (LRM) of a sea cucumber Stichopus japonicus. 2. The steady contracture tension in LRM fibres maximally activated with 10(-3) mol l-1 acetylcholine (ACh) was reduced by vibrations (peak-to-peak amplitude, 0.5­2.5 % of l0, where l0 is the slack len...
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1. The intracellular localization and translocation of activator Ca in the longitudinal retractor muscle (LRM) of a sea cucumber Stichopus japonicus were studied by fixing the LRM in a 1% OsO4 solution containing 2% K pyroantimonate. 2. In the resting LRM fibres, electron-opaque pyroantimonate precipitate was mostly localized along the inner surface of the plasma membrane and at the subsarcolem...
متن کاملPhysiological and Ultrastructural Studies on the Longitudinal Retractor Muscle of a Sea Cucumber Stichopus Japonicus I. Factors Influencing the Mechanical Response
1. The physiological properties of contraction and the ultrastructure of the longitudinal retractor muscle (LRM) of a sea cucumber Stichopus japonicus were studied to give information about the sources of activator Ca in echinoderm somatic smooth muscles. 2. The magnitude of AChand K-induced contractures was dependent on [Ca]0, and both contractures were eliminated in Ca-free solution, while th...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1994
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.194.1.319