ES 330 Study Guide - Midterm Guide: Sliding Filament Theory, Endoplasmic Reticulum, Myosatellite Cell
18 Apr 2017
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How does it differ from a muscle cell: a satellite cell is a precursor to a skeletal muscle cell b. Its main role is to repair damaged muscle cells or contribute to formation of new muscle tissue b. i. Upon injury or loading, satellite cells are activated and proliferate ( rapidly in number and multiply) b. ii. Some of the proliferated daughter cells from the original satellite cells leave their position and pass through the sarcolemma and migrate to the site of injury b. iii. They then fuse with the existing fiber and engage in fiber repair and/or contribute to fiber growth/hypertrophy b. iv. Chemokines/cytokines induces a cell to migrate (inflammatory/satellite cells) b. v. growth factor (fgf) stimulates cells to divide/proliferate: distinct location- sandwiched between the basal lamina & the sarcolemma (cell membrane, satellite cells differ from muscle cells by: d. i. Satellite cell has little to no cytoplasm d. iii.
