Mitochondria-filled nerve endings around the terminal arteriole in the rat posterior cricoarytenoid muscle

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著者

    • DESAKI Junzo
    • Department of Anatomy, Ehime University School of Medicine

抄録

We employed light and electron microscopy to examine the innervation of terminal arterioles in the rat posterior cricoarytenoid (PCA) muscle over a three-week period before and after unilateral denervation of the recurrent nerve. Observations showed an occasional single small-sized myelinated nerve fiber around the terminal arteriole in both normal and denervated PCA muscles. One axon after the last node of Ranvier of the small-sized myelinated nerve fiber, together with some nonmyelinated nerve fibers, was enwrapped by the Schwann cell and ran along the terminal arteriole, forming varicose swellings with numerous mitochondria along its course. In one instance, a small-sized myelinated nerve fiber in the denervated PCA muscle ramified into several branches containing numerous mitochondria. These nerve endings mainly existed in the adventitia, consisting of some layers of fibroblasts and collagen fibrils, and some of them were close to the vascular smooth muscle cells with only an intervening basal lamina. These findings suggest that the mitochondria-filled nerve endings may be sensory in nature, and function in response to the expansion and contraction of blood vessels caused by increased and/or decreased blood flow or intravascular pressure.

収録刊行物

  • Archives of histology and cytology

    Archives of histology and cytology 67(2), 179-185, 2004-06-01

    国際組織細胞学会

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各種コード

  • NII論文ID(NAID)
    10013491498
  • NII書誌ID(NCID)
    AA1068990X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09149465
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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