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

Question

Quizplus · Accepted Answer

The statement in option A is incorrect as a quick contraction and relaxation of an isolated skeletal muscle is known as a twitch, not tetanus. Tetanus is a sustained contraction of a muscle caused by rapid stimulation of its motor neurons.

Select the Incorrect Statement About Muscle and Muscle Fibers