Skeletal muscles are composed of muscle fibers surrounded by the sarcolemma, with sarcoplasm as the cytoplasm. Muscle fibers contain numerous mitochondria for ATP and the sarcoplasmic reticulum (SR) stores Ca2+ for contraction.
Los músculos esqueléticos están compuestos por fibras musculares rodeadas por el sarcolema, con sarcoplasma como citoplasma. Las fibras musculares contienen numerosas mitocondrias para el ATP y el retículo sarcoplásmico (SPR) almacena Ca2+ para la contracción.
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