89. A patient with Parkinson’s disease experiences tremors, rigidity, bradykinesia, and postural instability. What is the technical primary pathophysiological defect?
A.
Accumulation of amyloid plaques.
B.
Loss of dopaminergic neurons in the substantia nigra.
✓
C.
Demyelination of nerve fibers.
D.
Increased acetylcholine production.
📖 Additional Information
Accumulation of amyloid plaques.
Loss of dopaminergic neurons in the substantia nigra.
