On the form and arrangement in fasciculi of striated voluntary muscle fibers. A preliminary report

In the last few decades, relatively little special attention has been given to the form of striated voluntary muscle fibers and to their arrangement in the fasciculi. In the anatomic literature of this period, consideration is given mainly to the structure of the myofibrils, to the relation of the connective tissue of the muscle to the fibers, to the development of muscle fibers and the developmeht of the musculature as a whole. One studying current texts is impressed with the unanimity of expressed views concerning the form of muscle fibers and the question is treated as having received satisfactory solution. Heidanhainl in ‘Plasma und Zelle’ treats of the form and length of voluntary muscle fibers as follows :