Transversely split sarcomeres are seen in mouthpart muscles of the blue crab in the electron microscope. Sarcomeres split only at the H zone. Two new sarcomeres are formed by a Z disk which appears in the H zone of the splitting sarcomere. Splitting may involve breaking of the thick filaments in the H zone, elongation of these filaments, and formation of both new actin filaments and Z-disk materials, Sarcomere splitting would allow longitudinal growth of muscle cells without lengthening of sarcomeres and concomitant changes in contractile properties.
Article| March 01 1979
Transverse sarcomere splitting. A possible means of longitudinal growth in crab muscles.
S S Jahromi
M P Charlton
Online ISSN: 1540-8140
Print ISSN: 0021-9525
J Cell Biol (1979) 80 (3): 736–742.
S S Jahromi, M P Charlton; Transverse sarcomere splitting. A possible means of longitudinal growth in crab muscles.. J Cell Biol 1 March 1979; 80 (3): 736–742. doi: https://doi.org/10.1083/jcb.80.3.736
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