Coloured TEM of skeletal (striated) muscle of fish

Coloured TEM of skeletal (striated) muscle of fish

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Credit: SCOTT CAMAZINE AND M. MARCHATERRE/SCIENCE PHOTO LIBRARY

Caption: Skeletal muscle of a fish. Coloured Transmission Electron Micrograph (TEM) of skeletal (striated) muscle of the fish Porichthys notatus. The banding pattern here gives striated muscle its name. These bands are formed by myofilaments (actin and myosin protein filaments). A wide Z-band (dark green) runs diagonally from upper left to bottom right, made of actin filaments. To its right is an A-band (light green) of thicker myosin filaments. These filaments slide over each other to cause muscle contraction. Sarcoplasmic reticulum (top right to bottom left) carries nerve impulses to these filaments. Magnification: x6,250 at 35mm size.

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Keywords: anatomy, animal, body, fish, muscle, muscles, porichthys notatus, sarcoplasmic reticulum, skeletal, skeletal muscle, striated muscle, z band

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