Chapter 8 Quiz 2

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

B  all of these

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

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

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

A  association cortex.

B  secondary motor cortex.

C  descending motor pathways.

D  spinal interneuronal pools.

E  primary motor cortex.

A  Golgi organs.

B  Renshaw cells.

C  cocontraction.

D  muscle spindles.

E  reciprocal innervation.

A  CNS is to PNS.

B  voluntary is to reflex.

C  muscle spindle is to skeletal muscle.

D  dynamic is to static.

E  voluntary is to ballistic.

A  fatigue.

B  color.

C  length.

D  location.

E  tension.

A  spindle afferents.

B  gamma efferents.

C  Golgi tendon organs.

D  extrafusal motor pools.

E  synergistic muscles.

A  isometric.

B  antagonistic.

C  dynamic

D  synergistic.

E  extensors.

A  discharge unit.

B  motor unit.

C  agonists.

D  motor pool.

E  antagonists.

A  most muscle fibers.

B  most extensors.

C  fewest muscle fibers.

D  most motor neurons.

E  fewest motor neurons.

A  cerebellum was lesioned.

B  dorsolateral corticospinal tracts were transected.

C  dorsolateral corticorubrospinal tracts were transected.

D  ventromedial corticospinal tracts were transected.

E  basal ganglia were lesioned.

A  vestibular nucleus

B  tectum

C  cerebellum

D  basal ganglia

E  tegmentum

A  tectum.

B  reticular formation.

C  all of these

D  vestibular nuclei.

A  muscles of the hands and wrists.

B  motor neurons that project to the fingers.

C  muscles of the fingers and thumb.

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

E  Betz cells.

A  vestibular system.

B  cerebellum.

C  substantia nigra.

D  red nucleus.

E  caudate.

A  thighs.

B  proximal limbs.

C  hands and feet.

D  body core.

E  legs.