General description (1)components Muscle cells: elongated thread-liked shape muscle fibers Cell membrane- Sarcolemma(肌膜) Cytoplasma- Sarcoplasm(肌浆) Smooth endoplasmic reticulum(sEr) Sarcoplasmic reticulum(肌浆网) Connective tissue, blood vessel, lymph-vessel and nerve(1) components General description Muscle cells: elongated ,thread-liked shape----- muscle fibers Cell membrane - Sarcolemma(肌膜) Cytoplasma - Sarcoplasm (肌浆) Smooth endoplasmic reticulum(SER) - Sarcoplasmic reticulum(肌浆网) Connective tissue,blood vessel, lymph-vessel and nerve