Cardiac muscle, TEM

Cardiac muscle, TEM

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This image is part of the feature Embryonic Stem Cells

Credit: THOMAS DEERINCK, NCMIR/SCIENCE PHOTO LIBRARY

Caption: Cardiac muscle. Coloured transmission electron micrograph (TEM) of cardiac muscle fibrils (red and yellow)from a healthy heart. Mitochondria (brown) supply the muscle cells with energy. The muscle fibrils, or myofibrils, are crossed by transverse tubules (dark red lines). These tubules mark the division of the myofibrils into contractile units (sarcomeres). Cardiac muscle is under subconscious control and continuously contracts to pump blood around the body without tiring. Magnification: 4000x when printed 10 centimetres across.

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Keywords: anatomical, anatomy, biological, biology, cardiac, cardiology, coloured, continuous, contractile unit, false-coloured, fibre, fibril, fibrils, healthy, heart, histological, histology, micrograph, microscope, mitochondrion, muscle, muscles, myocardium, myofibril, myofibrils, normal, organelle, organelles, pump, sarcomere, sarcomeres, tem, transmission electron, transmission electron micrograph, transverse tubules, tubule, units, z-lines

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