Quiz Questions From Quizzes Flashcards
(39 cards)
A 25 y/o has damage to the frontal lobes. What would be expected movements related deficits?
Difficulty initiating voluntary movements
T or F: in addition to the role in movement, the basal ganglia play a role in cognition?
True
Akinesia, bradykinesia, rigidity, tremor, postural instability, freezing, shuffled gait, forward flexed posture are all characteristics of which disorder?
Parkinson’s
Dysmetria of the right hand is either overshooting or undershooting of the target during reaching, result from lesions of the _______ cerebellum in pendulous tremor as the Brian trie to correct the movement?
Right lateral
What motor association corticies is most active when performing coordinated bilateral movements or complex sequential movements?
Supplemental Motor cortex
What muscle contraction is always abnormal and is caused by degeneration of the LMN?
Fibrillations
A patient suffers a lesion of the corticospinal tract. What is an example of something that would be affected?
Typing a letter
The efference copy of the body is a “snapshot” of the LMN and is formed by the cerebellum as part of the the error correcting function. What tract is responsible for collecting the information from the spinal cord?
Ventral spinocerebellar tract
At what point do most of the axons of the lateral cortical spinal pathway cross to the opposite side of the CNS?
In the caudal medulla
What is the function of the vermis?
Controls axial musculature vie the medial pathways
T or F: the cerebellum provides conscious awareness of proprioceptive information?
False
The medial pathways are in general concerned with ___?
Control of movement of the postural and girdle muscles
A pt. Has an injury to the medial portion of the primary motor cortex. Which part of the body maps to this region of the cortex?
Lower limbs
Which pool of motor neurons do the UMN of the lateral corticospinal tracts typically innervate or terminal on the ____ motor neuron pools. These pools innervate the _____ muscle of the body?
Lateral; distal muscles
The reticulospinal tract originates from the _____ and _____ decussate as it descends?
Pons and medulla : does not
The lateral Vestibulospinal tract originates from the medial and inferior vestibular nuclei in the pons, it descends ______, and terminates at ______.
Ipsilaterally, all spinal cord levels
Where is the origin of the rubrospinal tract?
Red nucleus in the midbrain
An alpha motor neuron and all the muscle fibers innervated by it make up the elementary component of motor control called….?
Motor unit
Does the basal ganglia coordinate and correct complex movements?
No. That’s the cerebellums job
The vermis of the cerebellum is associated with….?
Coordination and control of axial muscles
Descending axons from the cerebral cortex are located in what section of the brainstem?
Anterior (basilar)
The posterior (tectum) section of the brainstem contains which of the following?
Inferior colliculus
Regulation of vital functions, awareness, and analgesia by activation of inhibitory interneurons in the ventral horn are the function of what?
Reticular formation
The part of the brainstem that supplies dopamine the cerebral areas involved in motivation and decision making is what?
Ventral tegmental area
