Chapter 8 Quiz 2

A  The cerebellum was activated during both newly learned and well-practiced sequences but more during newly learned sequences.

B  Dorsolateral prefrontal cortex was activated during the performance of newly learned but not well-practiced sequences

C  all of these

D  Posterior parietal cortex was more activated during the performance of both newly learned sequences than during the performance of well-practiced sequences.

E  Contralateral primary motor and somatosensory cortices were equally activated during the performance of newly learned and well-practiced sequences.

A  descending motor pathways.

B  secondary motor cortex.

C  spinal interneuronal pools.

D  association cortex.

E  primary motor cortex.

A  muscle spindles.

B  cocontraction.

C  Renshaw cells.

D  reciprocal innervation.

E  Golgi organs.

A  muscle spindle is to skeletal muscle.

B  CNS is to PNS.

C  dynamic is to static.

D  voluntary is to reflex.

E  voluntary is to ballistic.

A  location.

B  fatigue.

C  color.

D  length.

E  tension.

A  gamma efferents.

B  extrafusal motor pools.

C  synergistic muscles.

D  Golgi tendon organs.

E  spindle afferents.

A  isometric.

B  synergistic.

C  antagonistic.

D  extensors.

E  dynamic

A  antagonists.

B  motor pool.

C  agonists.

D  motor unit.

E  discharge unit.

A  fewest muscle fibers.

B  most extensors.

C  fewest motor neurons.

D  most muscle fibers.

E  most motor neurons.

A  dorsolateral corticospinal tracts were transected.

B  cerebellum was lesioned.

C  dorsolateral corticorubrospinal tracts were transected.

D  basal ganglia were lesioned.

E  ventromedial corticospinal tracts were transected.

A  cerebellum

B  vestibular nucleus

C  basal ganglia

D  tectum

E  tegmentum

A  vestibular nuclei.

B  reticular formation.

C  tectum.

D  all of these

A  muscles of the fingers and thumb.

B  motor neurons that project to the fingers.

C  Betz cells.

D  muscles of the hands and wrists.

E  interneurons of the spinal gray matter that in turn synapse on motor neurons that project to the distal muscles of the arms and legs.

A  caudate.

B  vestibular system.

C  cerebellum.

D  substantia nigra.

E  red nucleus.

A  thighs.

B  hands and feet.

C  proximal limbs.

D  legs.

E  body core.