. Text-book of embryology. Embryology. mb mb mf. mb mb Pig. 111.—Differentiation of the myotome as seen in horizontal sections of Lepidosiren larvae. A, stage 31; B, stage 31.+. mV, myoblast of inner wall; mb", myoblasts of outer wall; mf, contractile fibrils ; vac, vacuoles ; y, yolk. plane increase much in size as they develop more and more fibrils in their interior. As the outer wall of the myotome continues to increase in thickness the myoblasts of the inner wall become relatively more and more insignificant. Eventually they divide up into muscle- cylinders like those of the outer wal
. Text-book of embryology. Embryology. mb mb mf. mb mb Pig. 111.—Differentiation of the myotome as seen in horizontal sections of Lepidosiren larvae. A, stage 31; B, stage 31.+. mV, myoblast of inner wall; mb", myoblasts of outer wall; mf, contractile fibrils ; vac, vacuoles ; y, yolk. plane increase much in size as they develop more and more fibrils in their interior. As the outer wall of the myotome continues to increase in thickness the myoblasts of the inner wall become relatively more and more insignificant. Eventually they divide up into muscle- cylinders like those of the outer wall so that it is no longer possible to distinguish the inner wall portion of the myotome from the outer wall part. The muscle-cylinders become the muscle-fibres of the adult, the undifferentiated protoplasm between the fibrils persisting as the sarcoplasm the superficial layer of which may be somewhat condensed to form the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacBride, E. W. (Ernest William), 1866-1940; Kerr, John Graham, 1869-; Heape, Walter, 1855-1929. London : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, bookpubli, booksubjectembryology
