Fast muscle fiber — Free Physiology Illustration | GPAI | GPAI

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Fast muscle fiber — Free Physiology Illustration | GPAI | GPAI

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Fast muscle fiber

Fast muscle fiber

Physiology

Fast muscle fiber

Large elongated cylindrical skeletal muscle fiber with clear transverse striations and peripheral nuclei, shown in a light pink to pale pink-red or off-white tone indicating low myoglobin. The fiber may be shown in cutaway with parallel myofibrils and a prominent sarcoplasmic reticulum wrapped around them, with relatively few oval mitochondria and a less vascular overall appearance than a slow muscle fiber.

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