CanFitPro Personal Training Specialist Practice Test

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Study for the CanFitPro Personal Training Specialist Test. Prepare efficiently with flashcards and multiple-choice questions, complete with hints and explanations. Ace your exam with ease!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the primary function of muscle spindles?

Detect changes in muscle tension
Provide information about muscle length and rate of change in length
Supply nutrients to muscle fibers
Produce muscle cells

The correct answer is: Provide information about muscle length and rate of change in length

Muscle spindles are sensory receptors found in muscles that provide information about muscle length and the rate at which the muscle is changing in length. This helps the brain to know the position of the limb in space and adjust voluntary movements accordingly. Option A is incorrect because muscle spindles do not directly detect changes in muscle tension, but they indirectly provide information about it through the length and rate of change in length. Option C is incorrect because supplying nutrients to muscle fibers is the function of blood vessels, not muscle spindles. Option D is incorrect because muscle spindles do not produce muscle cells, they are simply sensory receptors within muscles.