Select the incorrect statement about muscle and muscle fibers. 

A. Long distance runners tend to have more slow-twitch muscle fibers than fast-twitch fibers.
B. A quick contraction and relaxation of an isolated skeletal muscle is called tetanus.
C. Fast-twitch fibers have fewer capillaries and mitochondria than slow-twitch fibers.
D. Slow-twitch muscle fibers have high concentrations of myoglobin.
E. Fast-twitch fibers increase in size with resistance training.


B. A quick contraction and relaxation of an isolated skeletal muscle is called tetanus.

Biology & Microbiology

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