SIU Neurology Resident Neuroscience Course

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Chapter 33. The Organization of Movement

  1. The motor circuit necessary to throw a ball is primarily an example of
    1. Feed-back control
    2. Feed-forward control
    3. Servo control
    4. None of the above
  2. Catching a ball is an example of
    1. Feed-back control
    2. Feed-forward control
    3. Both
    4. Neither
  3. A person's handwriting is similar no matter what body part is used. This is an example of
    1. Motor equivalence
    2. A motor program
    3. A plan for movement
    4. All of the above
  4. Reaction time
    1. Goes up with number of alternatives
    2. Goes down with learning
    3. Both
  5. Sherrington's "final common pathway" is
    1. The cerebral cortex
    2. The brain stem
    3. The spinal cord
    4. Alpha motor neurons
  6. Cerebellum and basal ganglia output directly to spinal cord through the
    1. Cerebellospinal tract
    2. Corticospinal tract
    3. Vestibulospinal tract
    4. There are no significant direct outputs to spinal cord
  7. The motor system have three levels of control--the spinal cord, brain stem and forebrain--organized both serially and parallel.
    1. True
    2. False
  8. The ventral corticospinal tract is un-decussated and projects mainly to
    1. Ventromedial cell column (axial muscles)
    2. Lateral ventral horn
    3. Red nucleus
    4. Nucleus tractus solitarius

Chapter 34. The Motor Unit and Muscle Action

  1. A motor unit is
    1. A motor neuron and all the fibers it innervates
    2. All the muscle fibers innervated by a motor neuron
    3. All the fibers innervated by an axonal branch
    4. All the muscle fibers in a fascicle
  2. A typical mammalian muscle fiber has a diameter of 50-100 microns and a length of
    1. 0.25 - 0.5 cm
    2. 0.5 - 1.0 cm
    3. 2 - 6 cm
    4. 10-15 cm
  3. Type I muscle fibers are
    1. Red, slow twitch, and produce small tensions for long periods
    2. Red, fast twitch, and produce large tensions for short periods
    3. White, fast twitch, and utilize anerobic metabolism
    4. None of the above
  4. The first muscles to be recruited for a rapid, forceful arm movement are in the
    1. Biceps
    2. Triceps
    3. Deltoid
    4. Lower extremities
  5. The calcium-binding protein most important for muscle contraction is
    1. Tropomyosin
    2. Troponin
    3. Actin
    4. The Z-disk


This is an open-book test due 2/12/2002
A score of 80% or better is required. If your score is less, you are required to retake the test.

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