Parkinson's disease is associated with degeneration of the
A) thalamus.
B) substantia nigra.
C) cerebellum.
D) cortex.
E) hippocampus.

Question

Quizplus · Accepted Answer

Parkinson's disease is primarily associated with degeneration of the dopaminergic neurons in the substantia nigra, which leads to a decrease in the levels of dopamine in the brain. This contributes to the motor symptoms of the disease, such as tremors, rigidity, and bradykinesia (slowness of movement). While other brain regions may also be affected in Parkinson's disease, the substantia nigra is a key site of degeneration.

Parkinson's Disease Is Associated with Degeneration of the