Morphologic and Histochemical Characteristics of Laryngeal Muscle

David B. Rosenfield, Robert H. Miller, Roy B. Sessions, Bernard M. Patten

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

Laryngeal muscle (LM) is highly specialized for phonation and sphincter activity. We queried whether this specialization is reflected in the structure of LM. We examined, using histochemical techniques, the structure of 5 LM from 3 men who died suddenly and who had no evidence of laryngeal disease. Compared with nonlaryngeal skeletal muscle, our specimens demonstrated moderate fibrosis, rounding of fibers, basophilia, and ragged red fibers that were shown to be mitochondria. In general, LM fibers are smaller, have more variability in size, and contain a greater percentage of histochemically type 1 fibers than limb skeletal muscles. These differences suggest that theories of motor control derived from studies of limb skeletal muscles may not apply to LM.

Original languageEnglish (US)
Pages (from-to)662-666
Number of pages5
JournalArchives of Otolaryngology
Volume108
Issue number10
DOIs
StatePublished - Oct 1982

ASJC Scopus subject areas

  • Otorhinolaryngology

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