myoblastn.
/ˈmʌɪə(ʊ)blɑːst/, /ˈmʌɪə(ʊ)blast/, U.S. /ˈmaɪoʊˌblæst/ Embryology.
Originally: an embryonic muscle-forming or myoepithelial cell in an invertebrate; (also) †embryonic muscle-forming tissue, mesoderm (obsolete). Later: any incompletely or poorly differentiated muscle cell; esp. any of the mononuclear cells that fuse to form skeletal muscle fibres.
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the world > life > the body > structural parts > muscle > muscle substance > [noun]
brawnc1325
mow1490
muscle1710
muscle cell1840
myosin1866
muscle-box1874
fibre-cell1878
myoblast1884
muscle-case1885
inogen1889
muscle casket1890
sarcomere1891
myofibril1898
myoplasm1907
myofibrilla1913
myotube1933
myofilament1949
myofibre1965
1884 Philos. Trans. 1883 (Royal Soc.) 174 781 We find thus that each muscle-fibre is developed from the base of an entoderm cell, the fibre and cell together constituting an ‘epithelio-muscular’ cell or—to adopt the more convenient term proposed by Claus—a myoblast.
1892 Amer. Naturalist 26 76 These six larger cells sink in and as myoblasts form the musculature, while all the other descendants of the somatoblasts form nervous system..etc.
1895 D. Sharp in Cambr. Nat. Hist. V. v. 149 The blastoderm differentiates into Ectoblast and Endoblast; this latter undergoing a further differentiation into Coeloblast and Myoblast.
1923 Proc. Royal Soc. B. 95 350 The skeletal muscle fibres of sucklings are formed chiefly by fusion of several myoblasts.
1949 H. W. C. Vines Green's Man. Pathol. (ed. 17) xv. 388 It is much more usual for many cells [in a rhabdomyoma] to be in a very immature stage (myoblasts). For this reason such growths often tend to be malignant (myoblastoma).
1972 Proc. National Acad. Sci. U.S.A. 69 255/1 Sizable numbers of single, contracting smooth-muscle myoblasts are present in cultures from 10-day chick amnions.
1984 J. F. Lamb et al. Essent. Physiol. (ed. 2) i. ii. 41 Each muscle fibre is a multinucleate cell which was formed during embryonic development from the fusion of a large number of mononuclear myoblasts.
2000 Daily Tel. 11 Aug. 12/8 Pre-muscle cells (myoblasts) also can turn into fat if Wnt is silent.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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n.1884