Skeletal muscle fiber — Free Physiology Illustration

Physiology

Skeletal muscle fiber

A single long, unbranched skeletal muscle fiber shown as an elongated cylindrical pink to red-pink cell with mostly parallel sides, uniform width, and blunt to slightly tapered ends. The surface is smooth with a thin outer membrane. The interior displays clear transverse striations as repeating alternating light and dark bands running across the width of the fiber. Multiple small oval to elongated nuclei are positioned peripherally just beneath the membrane along the outer edge, emphasizing the multinucleated nature of skeletal muscle. The overall appearance is straight, robust, and distinctly banded.

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