Heart muscle. Coloured scanning electron micrograph (SEM) of healthy human heart (cardiac) muscle fibres (blue). Mitochondria (mauve) supply the muscl

Heart muscle. Coloured scanning electron micrograph (SEM) of healthy human heart (cardiac) muscle fibres (blue). Mitochondria (mauve) supply the muscl Stock Photo
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Image details

Contributor:

Science Photo Library / Alamy Stock Photo

Image ID:

2ADK9DR

File size:

28.7 MB (1.3 MB Compressed download)

Releases:

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Dimensions:

2828 x 3543 px | 23.9 x 30 cm | 9.4 x 11.8 inches | 300dpi

Date taken:

21 July 1998

More information:

Heart muscle. Coloured scanning electron micrograph (SEM) of healthy human heart (cardiac) muscle fibres (blue). Mitochondria (mauve) supply the muscle cells with energy. The muscle fibres, or myofibrils, are crossed by transverse tubules (orange). These tubules mark the division of the myofibril into contractile units known as sarcomeres. Cardiac muscle, which normally works subconsciously, pumps blood continuously around the body without tiring. Magnification unknown.