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MUSCLE FIBRE ANATOMY, ILLUSTRATION
Muscle fibre anatomy. Illustration showing the structure of human muscles from the macroscopic (upper centre) to the microscopic (lower centre) levels. A skeletal muscle (pink) is shown attached to a bone. The muscle consists of muscle bundles (fascicles). Each fascicle consists of muscle fibres, which are shown here with nerves (yellow) enervating them and capillaries (red) supplying blood. The fibres consist of myofibrils, and the smallest element are the myofilaments within the myofibrils, consisting of the proteins actin and myosin. It is the movement of these overlapping protein strands that causes muscle contraction. (KEYSTONE/SCIENCE PHOTO LIBRARY/MAURIZIO DE ANGELIS/SCIENCE PHOTO LIBRARY)
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COPYRIGHTPFLICHTIG
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Ort
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
MAURIZIO DE ANGELIS
Grösse
5000 x 3750 px
Dateityp
JPEG