,Which neurotransmitter plays a primary role in the
facilitation of motor movement in the striatum?
A. Dopamine
B. Serotonin
C. Acetylcholine
D. GABA
Correct Answer: A. Dopamine
Rationale: Dopamine is crucial for the facilitation of
voluntary movement. It modulates motor control in the basal
ganglia, particularly in the striatum.
Question 2
Damage to which area of the brain is most likely to result in
an inability to perform coordinated, smooth movements?
A. Occipital lobe
B. Frontal lobe
C. Cerebellum
D. Medulla oblongata
Correct Answer: C. Cerebellum
Rationale: The cerebellum is integral for controlling
coordination and smoothing out the movements. Damage
can lead to ataxia, which disrupts coordinated movement.
Question 3
What is the main role of the motor cortex in movement?
, movements
C. Suppressing unwanted movements
D. Maintaining posture
Correct Answer: B. Planning, controlling, and executing
voluntary movements
Rationale: The motor cortex is primarily responsible for
the initiation and coordination of voluntary motor actions.
Question 4
Which of the following pathways primarily facilitates the
initiation of voluntary movement?
A. Reticulospinal tract
B. Corticospinal tract
C. Rubrospinal tract
D. Tectospinal tract
Correct Answer: B. Corticospinal tract
Rationale: The corticospinal tract is responsible for the
transmission of neural signals from the brain to the spinal
cord to initiate and control voluntary movements.
Question 5
In Parkinson’s disease, the death of dopaminergic neurons
in which brain structure leads to motor deficits?
A. Substantia nigra
B. Caudate nucleus
C. Amygdala
D. Thalamus
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