EYE OF SCIENCE / SCIENCE PHOTO LIBRARY EYE OF SCIENCE / SCIENCE PHOTO LIBRARY
Skeletal muscle. Coloured scanning electron micrograph (SEM) of skeletal (striated) muscle fibres. The muscle fibres are extremely long, cylindrical cells. Running the length of each fibre are thin threads called myofibrils (top left to bottom right), which contain the proteins actin and myosin. These proteins slide over each other to allow the muscle to contract. The alternating bands of actin and myosin give the fibres a striped appearance. Skeletal muscle is attached to the skeleton and is under the control of the voluntary nervous system. Magnification: x2000 when printed 10 centimetres wide.
Model release not required. Property release not required.