Overview of muscle tissue The myocytes is also called muscle fibers The cytoplasm is called sarcoplasm, and the smooth endoplasmic reticulum is called sarcoplasmic reticulum The sarcolemma is the cell membrane u yodels and woOverview of muscle tissue ◼ The myocytes is also called muscle fibers. ◼ The cytoplasm is called sarcoplasm, and the smooth endoplasmic reticulum is called sarcoplasmic reticulum. The sarcolemma is the cell membrane