1. Which neurotransmitter is primarily involved in the initiation of voluntary movement? A. Acetylcholine B. Dopamine C. Serotonin D. GABA Answer: B. Dopamine Rationale: Dopamine is a neurotransmitter that plays a key role in the control of movement. It is produced in the substantia nigra and is involved in the initiation and smooth coordination of voluntary muscular movements. 2. What is the role of the cerebellum in motor control? A. Initiating movement B. Regulating autonomic functions C. Coordinating and fine-tuning movements D. Processing sensory information Answer: C. Coordinating and fine-tuning movements Rationale: The cerebellum is crucial for motor coordination and balance. It receives information from the sensory systems, the spinal cord, and other parts of the brain and then regulates motor movements to ensure smooth, balanced muscular activity. 3. Which of the following is a symptom of Parkinson's disease? A. Hyperkinesia B. Bradykinesia C. Ataxia D. Spasticity Answer: B. Bradykinesia Rationale: Bradykinesia, or the slowness of movement, is a classic symptom of Parkinson's disease. It is due to the loss of dopamineproducing neurons in the substantia nigra, affecting the control of movement. 4. In a patient with hemiplegia, which area of the brain is most likely affected? A. Frontal lobe