Psychology 454: Behavioral Neuroscience Quiz
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Questions and Answers

What is the primary function of alpha motor neurons in muscle innervation?

  • To cause force generation by muscle (correct)
  • To innervate intrafusal fibers
  • To transmit proprioceptive feedback
  • To regulate muscle spindle sensitivity

    • What type of reflex is involved in withdrawing a limb from a painful stimulus?

  • Crossed-extensor reflex
  • Myotatic reflex
  • Flexor reflex (correct)
  • Reverse myotatic reflex

    • Which type of neuron is responsible for transmitting proprioceptive feedback from the muscle spindle?

  • Lower motor neurons
  • Ia axons (correct)
  • Gamma motor neurons
  • Alpha motor neurons

    • What is the primary function of the crossed-extensor reflex?

    <p>To compensate for the extra load caused by limb withdrawal</p> Signup and view all the answers

    What is the role of gamma motor neurons in muscle innervation?

    <p>To regulate muscle spindle sensitivity</p> Signup and view all the answers

    Which type of neuron is responsible for transmitting signals from the central nervous system to lower motor neurons?

    <p>Upper motor neurons</p> Signup and view all the answers

    What is the main function of the ventral horn in the spinal cord?

    <p>To integrate motor signals from the brain to the muscle</p> Signup and view all the answers

    Which type of muscle fiber is innervated by alpha motor neurons?

    <p>Extrafusal muscle fibers</p> Signup and view all the answers

    What is the term for the group of muscle fibers innervated by a single alpha motor neuron?

    <p>Motor unit</p> Signup and view all the answers

    How do alpha motor neurons increase muscle contraction?

    <p>By recruiting more motor units</p> Signup and view all the answers

    What is the function of gamma motor neurons?

    <p>To innervate intrafusal muscle fibers</p> Signup and view all the answers

    Which type of proprioceptor measures muscle tension?

    <p>Golgi tendon organ</p> Signup and view all the answers

    What is the name of the reflex that occurs when a muscle is stretched and contracts?

    <p>Myotatic reflex</p> Signup and view all the answers

    Which type of motor neuron is responsible for voluntary muscle movement?

    <p>Alpha motor neuron</p> Signup and view all the answers

    What is the term for the distribution of lower motor neurons in the spinal cord?

    <p>Spinal segments</p> Signup and view all the answers

    What is the name of the synapse between the alpha motor neuron and the muscle fiber?

    <p>Neuromuscular junction</p> Signup and view all the answers

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