Skeletal muscle fibres. Light micrograph (LM) of a section through a longitudinal section through skeletal muscle. The muscle is composed of many fibr
Skeletal muscle fibres. Light micrograph (LM) of a section through a longitudinal section through skeletal muscle. The muscle is composed of many fibres, containing contractile proteins arranged in smaller structures called myofibrils. The myofibrils lie in parallel along the fibres, and the regularly arranged proteins cause the fibres to have this cross-striated (banded) appearance. The light (I) bands and the dark (A) bands can be seen here as alternating light and dark vertical stripes. Skeletal muscle is responsible for voluntary muscle movement in the body, including the leg and arm muscles. Magnification: x1670 when printed 10 centimetres wide.
Size: 5400px × 4046px
Photo credit: © STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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