HISTOLOGY OF HUMAN STAPEDIUS AND TENSOR TYMPANI MUSCLE
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- Suzuka Yuko
- Department of Otolaryngology, Kansai Medical University
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- Tomoda Koichi
- Department of Otolaryngology, Kansai Medical University
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- Maeda Norio
- Department of Otolaryngology, Kansai Medical University
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- Kumazawa Tadami
- Department of Otolaryngology, Kansai Medical University
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
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- Ear Research Japan
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Ear Research Japan 15 (1), 170-172, 1984
THE JAPAN OTOLOGICAL SOCIETY
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Details 詳細情報について
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- CRID
- 1390282679746257920
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- NII Article ID
- 130004355228
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- ISSN
- 18845797
- 02889781
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- Text Lang
- en
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed