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Which of the following is NOT one of the three important dopaminergic pathways in the brain?

A. Nigrostriatal pathway
B. Mesolimbic pathway
C. Mesocortical pathway
D. Corticospinal pathway

Answer :

Final answer:

The Nigrostriatal, Mesolimbic, and Mesocortical pathways are the three key dopaminergic pathways in the brain. The Corticospinal pathway, as listed in the options, is not a dopaminergic pathway. These pathways, modulated by dopamine, play crucial roles in motor control, mood regulation, and the reward system.

Explanation:

The direct and indirect pathways in dopaminergic circuits are critical for controlling motor functions through the modulation of dopamine, a neurotransmitter. However, among the options listed, the Corticospinal pathway is not one of the three important dopaminergic pathways in the brain. The three main dopaminergic pathways are the Nigrostriatal, Mesolimbic, and Mesocortical pathways. The Nigrostriatal pathway has a significant role in motor control. Conversely, the Mesolimbic and Mesocortical pathways are heavily involved in mood regulation and the reward system, which are all dopamine-dependent processes. The reduction of dopamine in these pathways, particularly the Nigrostriatal pathway, is linked to conditions such as Parkinson's disease.

Learn more about Dopaminergic Pathways here:

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