Describe the composition of human muscles in regards to fast and slow-twitch muscle fibers.
a. Most muscles will have an equal number of both fast and slow-twitch muscle fibers.
b. Most muscles consist of mostly fast-twitch muscle fibers but will also have some slow-twitch muscle fibers.
c. Most muscles consist of mostly slow-twitch muscle fibers but will also have some fast-twitch muscle fibers.
d. Most muscles have both fast and slow-twitch muscle fibers but the numbers of each fiber type will vary dependent upon the muscle.
Ans: d. Most muscles have both fast and slow-twitch muscle fibers but the numbers of each fiber type will vary dependent upon the muscle.
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