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Smooth muscle
The cytoplasm of smooth muscle fibers cut in cross section appears homogeneous since myofibrils are not present. Actin and myosin myofilaments criss-cross throughout the cytoplasm. In addition, since the nucleus is located midway along the fiber, most cross sections of the fibers do not pass through the nucleus 1000x

Muscle fibers
The cytoplasm of smooth muscle fibers cut in cross section appears homogeneous since myofibrils are not present. Actin and myosin myofilaments criss-cross throughout the cytoplasm. In addition, since the nucleus is located midway along the fiber, most cross sections of the fibers do not pass through the nucleus 1000x

Nuclei
The cytoplasm of smooth muscle fibers cut in cross section appears homogeneous since myofibrils are not present. Actin and myosin myofilaments criss-cross throughout the cytoplasm. In addition, since the nucleus is located midway along the fiber, most cross sections of the fibers do not pass through the nucleus 1000x

Peripheral nerve
The cytoplasm of smooth muscle fibers cut in cross section appears homogeneous since myofibrils are not present. Actin and myosin myofilaments criss-cross throughout the cytoplasm. In addition, since the nucleus is located midway along the fiber, most cross sections of the fibers do not pass through the nucleus 1000x