BIOLOGICAL BASES OF BEHAVIOR
NEUROTRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Node of Ranvier
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Basal ganglia
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Myelin sheath
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Terminal buttons
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Detailed explanation-1: -The thalamus, subthalamus, and substantia nigra (SN) are not a part of basal ganglia but serve essential functions for the network. The motor system controlled by basal ganglia is made of corticobulbar and subcortical structures, the gray matter of the spinal cord, cerebellum, and efferent nerves.
Detailed explanation-2: -The International Basal Ganglia Society (IBAGS) informally considers the basal ganglia to be made up of the striatum, the pallidum (with two nuclei), the substantia nigra (with its two distinct parts), and the subthalamic nucleus, whereas Terminologia anatomica excludes the last two.
Detailed explanation-3: -The largest component of the basal ganglia is the corpus striatum which contains the caudate and lenticular nuclei (the putamen, globus pallidus externus, and internus), the subthalamic nucleus (STN), and the substantia nigra (SN). These structures intricately synapse onto one another to promote or antagonize movement.