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.   body core.
B.   legs.
C.   hands and feet.
D.   proximal limbs.
E.   thighs.
Question #2
In neuroanatomy, “rubro” refers to the
A.   vestibular system.
B.   cerebellum.
C.   red nucleus.
D.   caudate.
E.   substantia nigra.
Question #3
Most axons of the dorsolateral corticorubrospinal tract synapse on
A.   muscles of the hands and wrists.
B.   motor neurons that project to the fingers.
C.   Betz cells.
D.   muscles of the fingers and thumb.
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.
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.   all of these
B.   vestibular nuclei.
C.   tectum.
D.   reticular formation.
Question #5
Which midbrain structure receives visual and auditory information about spatial location?
A.   tectum
B.   tegmentum
C.   cerebellum
D.   basal ganglia
E.   vestibular nucleus
Question #6
In one classic experiment, monkeys had difficulty letting go of food after their
A.   dorsolateral corticospinal tracts were transected.
B.   ventromedial corticospinal tracts were transected.
C.   basal ganglia were lesioned.
D.   dorsolateral corticorubrospinal tracts were transected.
E.   cerebellum was lesioned.
Question #7
The motor units of the thumb, fingers, and face contain the
A.   most motor neurons.
B.   most extensors.
C.   most muscle fibers.
D.   fewest muscle fibers.
E.   fewest motor neurons.
Question #8
All of the motor neurons that innervate the fibers of a single muscle are called its
A.   motor pool.
B.   antagonists.
C.   motor unit.
D.   discharge unit.
E.   agonists.
Question #9
The biceps and triceps are
A.   extensors.
B.   antagonistic.
C.   synergistic.
D.   isometric.
E.   dynamic
Question #10
Muscles are protected from damage caused by excessive contraction by
A.   spindle afferents.
B.   Golgi tendon organs.
C.   extrafusal motor pools.
D.   gamma efferents.
E.   synergistic muscles.
Question #11
Muscle spindles provide the CNS with information about muscle
A.   tension.
B.   fatigue.
C.   location.
D.   color.
E.   length.
Question #12
Intrafusal is to extrafusal as
A.   voluntary is to ballistic.
B.   CNS is to PNS.
C.   dynamic is to static.
D.   voluntary is to reflex.
E.   muscle spindle is to skeletal muscle.
Question #13
Recurrent collateral inhibition is mediated by
A.   muscle spindles.
B.   cocontraction.
C.   reciprocal innervation.
D.   Renshaw cells.
E.   Golgi organs.
Question #14
One fMRI study indicated that the central sensorimotor programs for signing one’s name are stored in
A.   association cortex.
B.   secondary motor cortex.
C.   descending motor pathways.
D.   spinal interneuronal pools.
E.   primary motor cortex.
Question #15
Which of the following is a major finding of the Jenkins and colleagues PET study of motor learning?
A.   Contralateral primary motor and somatosensory cortices were equally activated during the performance of newly learned and well-practiced sequences.
B.   Posterior parietal cortex was more activated during the performance of both newly learned sequences than during the performance of well-practiced sequences.
C.   all of these
D.   The cerebellum was activated during both newly learned and well-practiced sequences but more during newly learned sequences.
E.   Dorsolateral prefrontal cortex was activated during the performance of newly learned but not well-practiced sequences

Need help with your exam preparation?

Existing Quiz Clients Login here