ACE Fitness ACE-Personal-Trainer Question Answer
Which of the following is the CORRECT definition of muscle spindles?
Fibers in muscle tissue that, when developed, take on a striated appearance
Fibers in muscle tissue that sense contractile force and cause the muscle to relax
Fibers in muscle tissue that protect the muscle in response to pressure
Fibers in muscle tissue that, when activated, cause a muscle to contract
TESTED 15 Feb 2026
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