Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of
A) tetanus.
B) Alzheimer disease.
C) myasthenia gravis.
D) rabies.
E) Parkinson disease.

Question

Quizplus · Accepted Answer

Damage to the substantia nigra leads to a decrease in dopamine production, which is associated with Parkinson's disease, characterized by increased muscle tone and other motor symptoms.

Damage to the Substantia Nigra Causes a Decrease in the Neurotransmitter