Chapter 8 Quiz 2

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

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

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

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

E  all of these

A  spinal interneuronal pools.

B  descending motor pathways.

C  primary motor cortex.

D  secondary motor cortex.

E  association cortex.

A  cocontraction.

B  muscle spindles.

C  reciprocal innervation.

D  Golgi organs.

E  Renshaw cells.

A  dynamic is to static.

B  voluntary is to reflex.

C  voluntary is to ballistic.

D  CNS is to PNS.

E  muscle spindle is to skeletal muscle.

A  color.

B  location.

C  length.

D  tension.

E  fatigue.

A  spindle afferents.

B  gamma efferents.

C  synergistic muscles.

D  Golgi tendon organs.

E  extrafusal motor pools.

A  dynamic

B  synergistic.

C  antagonistic.

D  isometric.

E  extensors.

A  motor pool.

B  agonists.

C  discharge unit.

D  motor unit.

E  antagonists.

A  most muscle fibers.

B  fewest motor neurons.

C  most extensors.

D  fewest muscle fibers.

E  most motor neurons.

A  cerebellum was lesioned.

B  ventromedial corticospinal tracts were transected.

C  dorsolateral corticospinal tracts were transected.

D  basal ganglia were lesioned.

E  dorsolateral corticorubrospinal tracts were transected.

A  cerebellum

B  vestibular nucleus

C  tectum

D  basal ganglia

E  tegmentum

A  tectum.

B  all of these

C  reticular formation.

D  vestibular nuclei.

A  muscles of the hands and wrists.

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

C  muscles of the fingers and thumb.

D  motor neurons that project to the fingers.

E  Betz cells.

A  vestibular system.

B  caudate.

C  red nucleus.

D  substantia nigra.

E  cerebellum.

A  thighs.

B  body core.

C  legs.

D  hands and feet.

E  proximal limbs.