Muscarinic receptor antagonists can be of benefit in treating Parkinson's disease.
Which one of the following BEST explains why?

Question

Muscarinic receptor antagonists can be of benefit in treating Parkinson's disease. 
 Which one of the following BEST explains why?

Answer

They decrease the inhibitory effects of cholinergics on dopamine signalling.

Answer

They restore the balance between dopamine signalling and unopposed cholinergic activity that occurs in Parkinson's disease.

Answer

Their action is largely restricted to the periphery.

Answer

They can be used to control the nausea associated with D2 receptor agonists used to treat Parkinson's.

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