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Myofibrils

Synonym(s)

  • myofibril
  • striated muscle fiber
  • striated muscle fibre

Definition(s)

The contractile element of skeletal and cardiac muscle; a long, highly organized bundle of actin, myosin, and other proteins that contracts by a sliding filament mechanism.

Definition from: Gene Ontology via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

The long cylindrical contractile organelles of striated muscle cells composed of actin filaments; myosin filaments; and other proteins organized in arrays of repeating units called sarcomeres.

Definition from: MeSH via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

Highly organized bundles of actin, myosins, and other proteins in the cytoplasm of skeletal and cardiac muscle cells that contract by a sliding filament mechanism; they are composed of numerous myofilaments.

Definition from: CRISP Thesaurus via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

See also Understanding Medical Terminology.

 
Published: November 24, 2014