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Which Mechanism Is Responsible for the Pleasurable and Rewarding Effects

Question 37

Multiple Choice

Which mechanism is responsible for the pleasurable and rewarding effects of some drugs, such as cocaine and opioids?


A) The excitation of midbrain dopamine neurons by the pontine cholinergic cells
B) ACh release from postganglionic fibers of the parasympathetic nervous system
C) Phasic release of ACh in the prefrontal cortex
D) Stimulation of K+ channel opening by muscarinic receptors

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