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• W2088421702 abstract "The locomotor function of the caudal muscle cells of ascidian larvae is identical with that of lower vertebrate somatic striated (skeletal) muscle fibers, but other features, including the presence of transverse myomuscular junctions, an active Golgi apparatus, a single nucleus, and partial innervation, are characteristic of vertebrate myocardial cells.Seven stages in the development of the compound ascidian Distaplia occidentalis were selected for an ultrastructural study of caudal myogenesis. A timetable of development and differentiation was obtained from cultures of isolated embryos in vitro.The myoblasts of the neurulating embryo are yolky, undifferentiated cells. They are arranged in two bands between the epidermis and the notochord in the caudal rudiment and are actively engaged in mitosis.Myoblasts of the caudate embryo continue to divide and rearrange themselves into longitudinal rows so that each cell simultaneously adjoins the epidermis and the notochord. The formation of secretory granules by the Golgi apparatus coincides with the onset of proteid-yolk degradation and the accumulation of glycogen in the ground cytoplasm.Randomly oriented networks of thick and thin myofilaments appear in the peripheral sarcoplasm of the muscle cells of the comma embryo. Bridges interconnect the thick and thin myofilaments (actomyosin bridges) and the thick myofilaments (H-bridges), but no banding patterns are evident. The sarcoplasmic reticulum (SR), derived from evaginations of the nuclear envelope, forms intimate associations (peripheral couplings) with the sarcolemma.Precursory Z-lines are interposed between the networks of myofilaments in the vesiculate embryo, and the nascent myofibrils become predominantly oriented parallel to the long axis of the muscle cell.Muscle cells of the papillate embryo contain a single row of cortical myofibrils. Myofibrils, already spanning the length of the cell, grow only in diameter by the apposition of myofilaments. The formation of transverse myomuscular junctions begins at this stage, but the differentiating junctions are frequently oriented obliquely rather than orthogonally to the primary axes of the myofibrils.With the appearance of H-bands and M-lines, a single perforated sheet of sarcoplasmic reticulum is found centered on the Z-line and embracing the I-band. The sheet of SR establishes peripheral couplings with the sarcolemma.In the prehatching tadpole, a second collar of SR, centered on the M-line and extending laterally to the boundaries with the A-bands, is formed. A single perforated sheet surrounds the myofibril but is discontinuous at the side of the myofibril most distant from the sarcolemma. To produce the intricate architecture of the fully differentiated collar in the swimming tadpole (J. Morph., 138: 349, 1972). the free ends of the sheet must elevate from the surface of the myofibril, recurve, and extend peripherally toward the sarcolemma to establish peripheral couplings.Morphological changes in the nucleus, nucleolus, mitochondria, and Golgi bodies are described, as well as changes in the ground cytoplasmic content of yolk, glycogen, and ribosomes.The volume of the differentiating cells, calculated from the mean cellular dimensions, and analyses of cellular shape are presented, along with schematic diagrams of cells in each stage of caudal myogenesis. In an attempt to quantify the differences observed ultrastructurally, calculations of the cytoplasmic volume occupied by the mqjor classes of organelles are included.Comparison is made with published accounts on differentiating vertebrate somatic striated and cardiac muscles." @default.
• W2088421702 created "2016-06-24" @default.
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• W2088421702 date "1974-09-01" @default.
• W2088421702 modified "2023-09-26" @default.
• W2088421702 title "Fine structure and differentiation of ascidian muscle. II. Morphometrics and differentiation of the caudal muscle cells ofDistaplia occidentalis tadpoles" @default.
• W2088421702 cites W1536367933 @default.
• W2088421702 cites W1964045664 @default.
• W2088421702 cites W1964152215 @default.
• W2088421702 cites W1972701743 @default.
• W2088421702 cites W1973524465 @default.
• W2088421702 cites W1977917125 @default.
• W2088421702 cites W1978660000 @default.
• W2088421702 cites W1983645902 @default.
• W2088421702 cites W1984359924 @default.
• W2088421702 cites W1988797546 @default.
• W2088421702 cites W1990472821 @default.
• W2088421702 cites W1993091017 @default.
• W2088421702 cites W1996863100 @default.
• W2088421702 cites W1997246284 @default.
• W2088421702 cites W2000006841 @default.
• W2088421702 cites W2002659880 @default.
• W2088421702 cites W2005164608 @default.
• W2088421702 cites W2007062222 @default.
• W2088421702 cites W2007130189 @default.
• W2088421702 cites W2008297317 @default.
• W2088421702 cites W2013548576 @default.
• W2088421702 cites W2015154923 @default.
• W2088421702 cites W2015371479 @default.
• W2088421702 cites W2016348823 @default.
• W2088421702 cites W2023809160 @default.
• W2088421702 cites W2026261647 @default.
• W2088421702 cites W2029258945 @default.
• W2088421702 cites W2045184837 @default.
• W2088421702 cites W2048653921 @default.
• W2088421702 cites W2048959747 @default.
• W2088421702 cites W2049415087 @default.
• W2088421702 cites W2060094016 @default.
• W2088421702 cites W2060940665 @default.
• W2088421702 cites W2061979877 @default.
• W2088421702 cites W2062539526 @default.
• W2088421702 cites W2062791463 @default.
• W2088421702 cites W2062829668 @default.
• W2088421702 cites W2063274248 @default.
• W2088421702 cites W2063420421 @default.
• W2088421702 cites W2065700132 @default.
• W2088421702 cites W2066139532 @default.
• W2088421702 cites W2075176977 @default.
• W2088421702 cites W2076371532 @default.
• W2088421702 cites W2076807452 @default.
• W2088421702 cites W2081725407 @default.
• W2088421702 cites W2083745906 @default.
• W2088421702 cites W2086636552 @default.
• W2088421702 cites W2086792851 @default.
• W2088421702 cites W2098434378 @default.
• W2088421702 cites W2108318201 @default.
• W2088421702 cites W2115095144 @default.
• W2088421702 cites W2123705825 @default.
• W2088421702 cites W2125792532 @default.
• W2088421702 cites W2127911529 @default.
• W2088421702 cites W2131601923 @default.
• W2088421702 cites W2142596760 @default.
• W2088421702 cites W2145105969 @default.
• W2088421702 cites W2145897147 @default.
• W2088421702 cites W2146508850 @default.
• W2088421702 cites W2412980646 @default.
• W2088421702 cites W3194548773 @default.
• W2088421702 doi "https://doi.org/10.1002/jmor.1051440104" @default.
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