Smooth muscle
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
Muscle fiber
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
Nucleus
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
Sarcolemma
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
Myofilaments
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
Dense bodies
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
Mitochondria
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
External lamina
The myofilaments of smooth cell fibers are not organized into myofibrils; instead, the overlapping thick and thin filaments form a reticulum within the sarcoplasm. Actin filaments are anchored in dense bodies, which represent Z lines of striated muscle. Dense bodies are located both in the sarcoplasm and beneath the sarcolemma. 7000x
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