HISTOLOGY OF HUMAN STAPEDIUS AND TENSOR TYMPANI MUSCLE

DOI

Description

Forty-two specimens of human middle ear muscles, tenser tympani muscle and stapedius muscle, were examined histologically with regard to their functions and the effeet of aging. The average of narrow short diameters of their muscle fibers were 11.6μm in tenser tympani muscle and 9.4μm in stapedius muscle. With advancing age, they were prone to atrophy and the fibrotic change in stroma was increased. Three muscle fiber types, red, white and intermediate were identified, in which the white fiber was the predominant type in both tensor tympani and stapedius muscles. Our observations suggest that the middle ear muscles will have a phasic and kinetic muscle activity according to the property of white fiber and their functions will deteriorate with advancing age.

Journal

  • Ear Research Japan

    Ear Research Japan 15 (1), 170-172, 1984

    THE JAPAN OTOLOGICAL SOCIETY

Details 詳細情報について

  • CRID
    1390282679746257920
  • NII Article ID
    130004355228
  • DOI
    10.11289/otoljpn1981.15.170
  • ISSN
    18845797
    02889781
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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