A nursing student asks the nurse to differentiate the pathology of Alzheimer's disease from that of Parkinson's disease. Which description is correct?

a. Alzheimer's disease involves a possible excess of acetylcholine and neuritic plaques.
b. Alzheimer's disease is caused by decreased amounts of dopamine and degeneration of cholinergic neurons.
c. Parkinson's disease is characterized by an imbalance of dopamine and acetylcholine.
d. Parkinson's disease involves increased dopamine production and decreased acetylcholine.


ANS: C
Parkinson's disease (PD) is characterized by an imbalance of dopamine (DA) and acetylcholine (ACh) caused by an unexplained degeneration of the dopaminergic neurons allowing the excitatory response of acetylcholine to exceed the inhibitory response of dopamine. Alzheimer's disease (AD) may result from decreased ACh, degeneration of cholinergic neurons, and neuritic plaques. Dopamine does not appear to play a role in Alzheimer's disease.

Nursing

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Nursing

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