Which of the following statements is true of muscle atrophy?
A. The greatest muscle atrophy occurs in the fast-twitch fibers.
B. A muscle that is immobilized in a lengthened position tends to atrophy less.
C. Isometric contraction and electrical stimulation of muscles causes muscle atrophy.
D. A muscle that is immobilized in a shortened position gains contractile function.
Answer: B
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