Nicotine ultimately stimulates which are implicated in the reinforcing effects of smoking. muscarinic receptors dopamine receptors gaba receptors serotonin receptors

The answer to this problem is "Dopamine Receptors". Hence, when Nicotine ultimately stimulates dopamine neurons, which are the implicated in the reinforcing and pushing the effects of smoking habits. The dopamine which is chemically released by the neurons or nerve cells and it gives a signal to other neighboring nerve cells.

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