Skeletal muscle

Skeletal muscle

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Credit: BIOLOGY MEDIA/SCIENCE PHOTO LIBRARY

Caption: Enhancement of 5E6120. Striated muscle. coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding- pattern of the muscle fibrils is seen. The fibrils run in parallel (from left to right) and between them runs sarcoplasmic reticulum (SR) that transmits nerve impulses to the fibrils. Here, the SR contains many mitochondria. Within each fibril are contractile units called sarcomeres separated by lines. A sarcomere has protein filaments of myosin and actin that slide over each other, thereby causing the whole muscle to contract. Skeletal muscle is responsible for voluntary muscle movement in the body.

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Keywords: actin filament, anatomy, biology, body, cell biology, human, human bodies, human body, images, magnified image, micrograph, micrographs, micrography, microscopic photos, mitochondria, muscle, muscle fibril, muscle fibrils, muscles, myosin filament, pattern, physiology, red, sarcomeres, sarcoplasmic reticulum, science, skeletal muscle, sr, striated muscle, striated muscles, striated skeletal muscle, striated skeletal muscles, subjects, tem, tem image, tem images, transmission electron micrograph, transmission electron micrographs

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