The fine structure of extraocular muscles of the bank vole, &lt;i&gt;Clethrionomys glareolus&lt;/i&gt; Schr.

Kaczmarski, F

doi:10.1159/000143563

Cited by 7 publications

(1 citation statement)

References 1 publication

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“…Since the extraocular muscles often differ from other skeletal muscles with respect to their struc ture and their contractile abilities, they have served as a subject of numerous both phy siological and structural studies. Among the latter, the literature concerned with extra ocular muscles in mammals is most exten sive [Hess, 1961;Zenker and Anzenbacher, 1964;Cheng and Breinin, 1966;Mukuno, 1966;Peachey, 1968;Cheng-Minoda et al, 1968;Mukuno, 1968Mukuno, , 1969Kaczmarski, 1970a;Nag and Peachey, 1972], although representatives of other vertebrate groups have also been investigated [Kilarski and Bigaj, 1969;Kaczmarski, 1969Kaczmarski, , 1970bAlvarado-Mallart, 1972;Maierel al., 1972;Kordylewski, 1974;Witaliñski and Loesch, 1975]. There is, however, no information concerning extraocular muscles in the oldest and most primitive group of the contempor ary vertebrates, i.e.…”

Section: Introductionmentioning

confidence: 99%

Extraocular Muscles in the Lamprey, <i>Lampetra fluviatilis</i> L.

Witaliński¹,

Łabuda²

1982

Cells Tissues Organs

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Six extraocular muscles of the river lamprey, Lαmpetrα fluviαtilis L., were studied with the light and electron microscope. On the basis of morphology and histochemistry three types of muscle fibres were distinguished: thin, thick mitochondria-rich and thick multifibrillar fibres. In the thin fibres, 2.8–22.4 μm in diameter, myofibrils are distributed peripherally and show strong ATPase activity. The mitochondria are located paraxially. In the thick mitochondria-rich fibres, 19.4–31.0 μm in diameter, myofibrils are also located peripherally, whereas the central part of the fibre is densely packed with very numerous mitochondria possessing tubular cristae. Thick multifibrillar fibres, with a diameter similar to that of the former type, contain thin myofibrils scattered over the entire cross-section of the fibre. The activity of myofibrillar ATPase is lower in both types of thick fibres than in the thin ones. The tubules of the T system were observed frequently only in the thick multifibrillar fibres. The extraocular muscles of the lamprey are composed of large quantities of muscle fibres. Thin and thick fibres do not form separate layers, but are more or less uniformly distributed throughout the muscle. Many muscle fibres show structural features suggesting their degeneration.

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Section: Introductionmentioning

confidence: 99%

Extraocular Muscles in the Lamprey, <i>Lampetra fluviatilis</i> L.

Witaliński¹,

Łabuda²

1982

Cells Tissues Organs

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Satellite cells in the tail muscles of the urodelan larvae during development

et al. 1984

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The incidence and ultrastructure of satellite cells in the tail muscles of urodelan larvae were examined during development during which the number of satellite cells is gradually reduced. They are found more frequently in red than in the white fibres in all four stages examined (stage 53, 64, 66+ and juvenile). As development proceeds, intercellular space between satellite cell and muscle fibre is in general gradually extended and is mostly filled with basal lamina. Small muscle cells, satellite fibres, which are situated under the basal lamina of the parent fibre, are morphologically similar to satellite cells but contain a small amount of myofibrils. Three types of satellite fibres are distinguishable on the basis of differences in K2-EDTA-treated ATPase activity, width of Z line, and parent fibre type. Neuromuscular junctions are visible in satellite fibres.

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Cytomorphometry of sarcoplasmic reticulum in extrinsic eye muscles of the teleost (Tinca tinca L.)

Kilarski¹

1973

Z.Zellforsch

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The fine structure of extraocular muscles of the bank vole, <i>Clethrionomys glareolus</i> Schr.

Cited by 7 publications

References 1 publication

Extraocular Muscles in the Lamprey, <i>Lampetra fluviatilis</i> L.

Extraocular Muscles in the Lamprey, <i>Lampetra fluviatilis</i> L.

Satellite cells in the tail muscles of the urodelan larvae during development

Cytomorphometry of sarcoplasmic reticulum in extrinsic eye muscles of the teleost (Tinca tinca L.)

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