Title: Electron micrograph of a satellite cell of a muscle fibre (gerbil)
(1): Satellite cell as precursor cell to replenish muscle fibres. The satellite cell lies closely against the sarcolemma of the myofibre, they are enclosed by a common basal lamina (Blue arrow).
(*): Thin curly rounded cellular protein remnants between the two cell membranes. (Not to be mistaken for basal lamina).
(Green arrows): Triad with T-tubules i.e., invaginations of sarcolemma deep into the muscle cell.
(Red arrows): Cross sectioned sarcoplasmic reticulum cisterns (L-system).
(2): Collagen fibres in the endomysial connective tissue.
Keywords/Mesh: locomotor system, skeletal muscle, striated muscle, myofibre, satellite cell, precursor cell, triad, sarcoplasmic reticulum, electron microscopy, POJA collection