A. Portion of a medium sized human muscular fiber. B. Separated bundles of fibrils equally magnified. Labels: a, larger, and b, smaller collections; c, still smaller; d, smallest which could be detached, possibly representing a single series of sarcous element.
GalleriesHuman Muscular System
Baker, W. Morrant & Harris, Vincent Dormer Kirkes' Hand-book of Physiology, 13th ed. (Philadelphia: P. Blakiston's Son & Co., 1892) 88