Branched skeletal muscle fibers not associated with dysfunction

Lucy M. Brown, Jose R. Lopez, Jean A. Olsen, Reinhardt Rüdel, Robert M. Simmons, Stuart R. Taylor, Laurel A. Wanek

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We report the occurrence of large clefts and branches in some amphibian vertebrate skeletal muscle fibers. Such fibers can be isolated intact from various skeletal muscles of fully mature animals and apparently are normal in other respects. Electron micrographs showed no signs of degeneration in most fibers. Electrical and mechanical studies revealed that all branches were excitable and able to contract. Branches evidently can arise in the absence of abnormal influences such as experimentally induced overload. The apparent cause may be either fusion or splitting of fibers.

Original languageEnglish (US)
Pages (from-to)645-653
Number of pages9
JournalMuscle & nerve
Issue number8
StatePublished - 1982
Externally publishedYes

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)


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