Professor Berger Is Giving a Lecture About the Motor Systems

question 75

Multiple Choice

 Professor Berger is giving a lecture about the motor systems in the body. She tells the class that Ia sensory fibers will become active in response to

• A) contraction of muscle fibers.
• B) input from gamma motor neurons.
• C) stretching of muscle fibers.
• D) input from Ib fibers.

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