If Only α Motor Neurons Were Activated During a Voluntary

question 48

Multiple Choice

If only α motor neurons were activated during a voluntary movement, the muscle spindle would be unable to transmit information to correct the rate of the movement because the

• A) extrafusal fibers would not shorten.
• B) intrafusal fibers would be stretched excessively.
• C) intrafusal fibers would be slack.
• D) intrafusal fibers would remain at their resting length.