Muscle Tissue, Muscle Contraction, Muscle Cell, Neuromuscular System, Neuromuscular Junction, Muscle Stretch Receptor, Muscle Spindle, Muscle Spindle Primary Nerve Ending, Muscle spindle Secondary Nerve Ending, Golgi Tendon Organ Nerve Ending, Neurotendinous Spindle, Golgi Tendon Organ, Muscle, Myocyte, Striated Muscle, Skeletal Muscle Cell, Striated Muscle Cell, Skeletal Myocyte, Smooth Muscle, Smooth Muscle Cell, Smooth Myocyte, Sarcolemma, Myofibril, Myofilament, Actin Myofilament, Myosin Myofilament, Sarcomere, Sarcoplasmic Reticulum, A band, H zone, I band, M line, Z line, Z Disc