Degeneration of the neurons in which of the following structures leads to the muscle tremors associated with Parkinson disease?
A) Cerebral crus
B) Tegmentum
C) Pons
D) Substantia nigra
E) Inferior colliculi

Question

Quizplus · Accepted Answer

The substantia nigra is a region located in the midbrain that supplies dopamine to the basal ganglia, which is involved in controlling movement. In Parkinson's disease, there is a degeneration of the dopaminergic neurons in the substantia nigra, leading to a deficiency of dopamine in the basal ganglia and resulting in muscle tremors and other movement disorders.

Degeneration of the Neurons in Which of the Following Structures