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  1. 紀要
  2. 札幌医学雑誌
  3. 49巻

Ultrastructural Differences Between Longitudinal and Circular Muscle Cells of the Guinea Pig Stomach

https://doi.org/10.15114/smj.49.391
https://doi.org/10.15114/smj.49.391
9d8ee0b5-00f4-4f39-b4a4-b409c40f07db
名前 / ファイル ライセンス アクション
n0036472X494391.pdf n0036472X494391.pdf (4.5 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2019-08-23
タイトル
タイトル Ultrastructural Differences Between Longitudinal and Circular Muscle Cells of the Guinea Pig Stomach
言語 en
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ departmental bulletin paper
ID登録
ID登録 10.15114/smj.49.391
ID登録タイプ JaLC
著者 Megumi, Moriya

× Megumi, Moriya

Megumi, Moriya

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Eisaku, Miyazaki

× Eisaku, Miyazaki

Eisaku, Miyazaki

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抄録
内容記述タイプ Abstract
内容記述 The ultrastructure of the longitudinal and circular muscle cells of the guinea pig stomach, known to display different contractile responses, was compared. The longitudinal muscle layer consisted of about 20 layers of smooth muscle cells and the extracellular space occupied about 12.1% of the cross sectional area. The circular muscle layer consisted of closely packed muscle bundles arranged side by side. The extracellular space within the bundle represented about 4.4% of the cross sectional area. Nexuses were consistently found in the circular muscle layer but could not be found in the longitudinal muscle layer. Numbers of both mitochondria and microtubules per unit area of smooth muscle cell were larger in the longitudinal than in the circular muscle. The cell area occupied by the sarcoplasmic reticulum was about 4.7% in the longitudinal muscle cell, twice as much as in the circular muscle cell (2.3%). Numbers of caveolae per micrometer of the cell perimeter were almost the same in both tissues. There were approximately 25 and 50 thick filaments per 0.5 μm2 of cytoplasmic area in the longitudinal and circular muscle cell, respectively. A lower pH fixative (cacodylate, pH 6.6) gave a better contrast of specimens than other fixatives used, and an organic buffered (PIPES) fixative led to a more regular arrangement of myofilaments. But the characteristic distribution of the thick filaments between both muscles was not different among the specimens fixed with these fixatives.
書誌情報 札幌医学雑誌 = The Sapporo medical journal
en : The Sapporo medical journal

巻 49, 号 4, p. 391-401, 発行日 1980-08-01
ISSN
収録物識別子タイプ ISSN
収録物識別子 0036-472X
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
出版者
出版者 札幌医科大学医学部
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Cite as

Megumi, Moriya, Eisaku, Miyazaki, 1980, Ultrastructural Differences Between Longitudinal and Circular Muscle Cells of the Guinea Pig Stomach: 札幌医科大学医学部, 391–401 p.

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