Specializations for Excitation-Contraction Coupling in the Podial Retractor Cells of the Starfish Stylasterias forreri

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dc.contributor.authorCavey, Michael J.en
dc.contributor.authorWood, Richard L.en
dc.contributor.departmentBiological Sciencesen
dc.contributor.facultyFaculty of Scienceen
dc.contributor.institutionUniversity of Calgaryen
dc.date.accessioned2006-08-14T22:24:45Z
dc.date.available2006-08-14T22:24:45Z
dc.date.issued1981
dc.description.abstractUltrastructural examination of the podium of the asteroid echinoderm Stylasterias forreri has revealed that cells of the coelomic epithelium and cells of the retractor muscle should be considered as components of a single epithelium. The podial retractor cells are, therefore, myoepithelial in nature. This report concentrates on those ultrastructural features of the retractor cells that are most likely involved with excitation-contraction coupling. The spatial arrangement of the sarcoplasmic reticulum, the couplings between the sarcoplasmic reticulum and sarcolemma, and an intramembranous specialization of the sarcolemma are documented and discussed. Current concepts regarding the innervation of the retractor cells of the podium and the protractor cells of the ampulla are reviewed; and specific proposals for further investigation of podial innervation are outlined.en
dc.description.refereedyesen
dc.format.extent2672007 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationMichael J. Cavey and Richard L. Wood "Specializations for Excitation-Contraction Coupling in the Podial Retractor Cells of the Starfish Stylasterias forreri" Cell Tissue Res (1981) 218:475-485en
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/35109
dc.identifier.issn0302-766X
dc.identifier.urihttp://hdl.handle.net/1880/43428
dc.language.isoenen
dc.publisherSpringer-Verlagen
dc.publisher.urlhttp://www.springerlink.com/content/1432-0878/
dc.subjectBiologyen
dc.subject.otherExcitation-contraction couplingen
dc.subject.otherPodiumen
dc.subject.otherRetractor cellsen
dc.subject.otherStarfishen
dc.subject.otherUltrastructureen
dc.titleSpecializations for Excitation-Contraction Coupling in the Podial Retractor Cells of the Starfish Stylasterias forrerien
dc.typejournal article
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