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Unformatted text preview: ventricle of the heart Skeletal Muscle: • Muscle Fiber, is actually a cell. Plasma membrane = sarcolemma, cytoplasm = sarcoplasm, endoplasmic reticulum = sarcoplasmic reticulum, t-tubules. • A muscle is made up of muscle cells, muscle fiber is a single muscle cell, each fuber contains many myofibrils • Myofibril, muscle fibre has many myofibrils • Myosin – thick filament, composed of several hundred molecules of the protein myosin, each myosin molecule is shaped like a golf club. •...
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- Spring '08