Parkinson's disease (characterized by tremors and rigidity of limbs) is caused by degeneration of neurons that use which neurotransmitter?
Correct answer: C. Dopamine
- A. Acetylcholine
- B. Norepinephrine
- C. Dopamine
- D. GABA
Explanation
Parkinson's disease results from the loss of dopamine-producing neurons in the substantia nigra, leading to impaired movement control. The exact cause is unclear but involves genetic and environmental factors.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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