J Exp Biol 2001 Mar 01;204Pt 5:897-908. doi: 10.1242/jeb.204.5.897.

Role of Ca(2+) in excitation-contraction coupling in echinoderm muscle: comparison with role in other tissues.

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The longitudinal muscle of the body wall of Isostichopus badionotus may be considered a model for excitation-contraction coupling in echinoderm muscle. Other echinoderm muscles are reviewed by comparison with the model. Echinoderm muscle is also of interest as a model for ''mutable collagenous tissue''; however, in that tissue, Ca(2+) has been proposed to function both in living control systems and in regulation of non-living interstitial substance.

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