BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cerebellum
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Medulla
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Pons
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Midbrain
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Detailed explanation-1: -The substantia nigra is a paired structure of the midbrain. More specifically, it is located posterior to the crus cerebri.
Detailed explanation-2: -The substantia nigra, located in the ventral mesencephalon, is one of the five nuclei that constitute the basal ganglia circuit, which controls voluntary movements. It is divided into the pars compacta and the pars reticulata, which mainly contain dopaminergic and GABAergic cells respectively.
Detailed explanation-3: -The ventral tegmental area, or VTA, is in the midbrain, situated adjacent to the substantia nigra. Although it contains several different types of neurons, it is primarily characterized by its dopaminergic neurons, which project from the VTA throughout the brain.