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Artwork showing structure of human skeletal muscle
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Artwork showing structure of human skeletal muscle
Skeletal muscle. Illustration of the structure of human skeletal muscle. Skeletal muscle (top right) consists of bundles of long, thin cells called muscle fibres. A group of five muscle fibres with surrounding blood vessels is shown at centre. Each muscle fibre contains numerous " myofibrils", one of which is shown at lower centre. The myofibril is a bundle of two types of protein " myofilament" : myosin (green) and actin (red). When the muscle is stimulated, tiny cross-bridges (lower left) in the myosin filaments hook onto actin filaments and pull them along. As a result, myosin and actin filaments slide over each other, shortening the muscle and making it contract
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6420302
© JOHN BAVOSI/SCIENCE PHOTO LIBRARY
Actin Muscle Fibre Muscles Myofibril Myosin Skeletal Skeletal Muscle Striated Muscle
EDITORS COMMENTS
This artwork showcases the intricate structure of human skeletal muscle. The image depicts a close-up view of skeletal muscle, which is composed of bundles of long and thin cells known as muscle fibers. In the center, we can observe a group of five muscle fibers surrounded by blood vessels, highlighting their vital role in supplying nutrients to the muscles. At the lower center, one myofibril is displayed - a bundle consisting of two types of proteins called myofilaments: myosin (green) and actin (red). When stimulated, these proteins interact through tiny cross-bridges shown on the lower left side. These cross-bridges hook onto actin filaments and pull them along, resulting in the sliding movement between myosin and actin filaments. This process causes the muscle to shorten and contract. The detailed illustration not only provides an insight into how muscles function but also emphasizes their complexity at a microscopic level. It serves as a reminder that our bodies are marvelously designed machines capable of performing incredible feats thanks to this intricate network within our musculoskeletal system. This remarkable artwork was created by Science Photo Library, showcasing their expertise in capturing scientific imagery with precision and clarity. It offers viewers an opportunity to appreciate both the beauty and functionality inherent in our skeletal muscles while deepening our understanding of human anatomy.
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