Which of the following is not one of the three long dopamine tracts listed (nigrostriatal, mesolimbic, mesocortical)?

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Multiple Choice

Which of the following is not one of the three long dopamine tracts listed (nigrostriatal, mesolimbic, mesocortical)?

The key idea is that only three dopamine pathways are classically described as long projections to distant targets: nigrostriatal from the substantia nigra to the striatum, mesolimbic from the ventral tegmental area to limbic structures, and mesocortical from the ventral tegmental area to the prefrontal cortex. The tuberoinfundibular tract, however, runs from hypothalamic neurons to the pituitary stalk and primarily regulates prolactin release. Because its main role is endocrine signaling to the pituitary rather than modulating movement, reward, or cognition, it isn’t considered one of the long dopaminergic tracts.

The key idea is that only three dopamine pathways are classically described as long projections to distant targets: nigrostriatal from the substantia nigra to the striatum, mesolimbic from the ventral tegmental area to limbic structures, and mesocortical from the ventral tegmental area to the prefrontal cortex. The tuberoinfundibular tract, however, runs from hypothalamic neurons to the pituitary stalk and primarily regulates prolactin release. Because its main role is endocrine signaling to the pituitary rather than modulating movement, reward, or cognition, it isn’t considered one of the long dopaminergic tracts.

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