(At the top Scheme and ultrastructure of a sarcomere by courtesy of D.O. Fürst PhD and P.F.M van der Ven PhD, Institute for Cell Biology, University of Bonn, Germany)
Title: Electron micrograph of myofilaments in the M-band of a sarcomere
Scheme and electron micrograph of a cross section in the M-band of a sarcomere.
(1): The thick dense dots represent the hexagonal organized myosin filaments with star-like thin cross connecting filaments (mouse).
(2): Sarcoplasmic reticulum tubules/vesicles. (3): Glycogen particle. The sarcoplasmic reticulum forms a network around every bundle of myofilaments.
Keywords/Mesh: locomotor system, skeletal muscle, striated muscle, sarcomere, myosin, M-band, myofilament, sarcoplasmic reticulum, glycogen, electron microscopy, POJA collection