Psychology 103 - Physiological Psychology » Spring 2022 » Chapter 8 Quiz 2

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
In general, the dorsolateral corticospinal tract controls the muscles of the
A.   hands and feet.
B.   legs.
C.   thighs.
D.   body core.
E.   proximal limbs.
Question #2
In neuroanatomy, “rubro” refers to the
A.   caudate.
B.   substantia nigra.
C.   vestibular system.
D.   red nucleus.
E.   cerebellum.
Question #3
Most axons of the dorsolateral corticorubrospinal tract synapse on
A.   interneurons of the spinal gray matter that in turn synapse on motor neurons that project to the distal muscles of the arms and legs.
B.   muscles of the fingers and thumb.
C.   motor neurons that project to the fingers.
D.   muscles of the hands and wrists.
E.   Betz cells.
Question #4
In contrast to the ventromedial corticospinal tract, before descending to the spinal cord, the ventromedial cortico-brainstem-spinal tract interacts with the
A.   reticular formation.
B.   all of these
C.   tectum.
D.   vestibular nuclei.
Question #5
Which midbrain structure receives visual and auditory information about spatial location?
A.   basal ganglia
B.   tegmentum
C.   cerebellum
D.   tectum
E.   vestibular nucleus
Question #6
In one classic experiment, monkeys had difficulty letting go of food after their
A.   cerebellum was lesioned.
B.   ventromedial corticospinal tracts were transected.
C.   dorsolateral corticorubrospinal tracts were transected.
D.   basal ganglia were lesioned.
E.   dorsolateral corticospinal tracts were transected.
Question #7
The motor units of the thumb, fingers, and face contain the
A.   fewest motor neurons.
B.   fewest muscle fibers.
C.   most motor neurons.
D.   most muscle fibers.
E.   most extensors.
Question #8
All of the motor neurons that innervate the fibers of a single muscle are called its
A.   agonists.
B.   motor pool.
C.   motor unit.
D.   antagonists.
E.   discharge unit.
Question #9
The biceps and triceps are
A.   dynamic
B.   extensors.
C.   antagonistic.
D.   synergistic.
E.   isometric.
Question #10
Muscles are protected from damage caused by excessive contraction by
A.   gamma efferents.
B.   spindle afferents.
C.   synergistic muscles.
D.   Golgi tendon organs.
E.   extrafusal motor pools.
Question #11
Muscle spindles provide the CNS with information about muscle
A.   length.
B.   fatigue.
C.   color.
D.   tension.
E.   location.
Question #12
Intrafusal is to extrafusal as
A.   muscle spindle is to skeletal muscle.
B.   CNS is to PNS.
C.   dynamic is to static.
D.   voluntary is to ballistic.
E.   voluntary is to reflex.
Question #13
Recurrent collateral inhibition is mediated by
A.   cocontraction.
B.   Golgi organs.
C.   muscle spindles.
D.   reciprocal innervation.
E.   Renshaw cells.
Question #14
One fMRI study indicated that the central sensorimotor programs for signing one’s name are stored in
A.   descending motor pathways.
B.   spinal interneuronal pools.
C.   primary motor cortex.
D.   association cortex.
E.   secondary motor cortex.
Question #15
Which of the following is a major finding of the Jenkins and colleagues PET study of motor learning?
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.

Need help with your exam preparation?

Existing Quiz Clients Login here