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white muscle fiber (fast fiber, type 2 fiber)
Striated muscle fibers with less sarcoplasm, myoglobin & mitochondria than red fibers. They are generally larger* in diameter & contract more rapidly than red fibers.
* In the human psoas, red fibers are thicker than white fibers [2]
Related
fiber
General
skeletal muscle fiber
References
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
- Kimura T.
Composition of psoas major muscle fibers compared among humans,
orangutans, and monkeys.
Z Morphol Anthropol. 2002 Mar;83(2-3):305-14.
PMID: 12050900