This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Glutamate as a neurotransmitter is synthesized mainly in which part of basal ganglia \nSelect and explain. \nA. Globus pallidus interna, B. Globus pallidus externa, C. Subthalamic nucleus, D. Putamen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Connections in Basal ganglia\n\nSubstantia nigra pars compacta (SNPC) to Striatum (Caudate nucleus & Putamen)- Dopaminergic \nStriatum to Substantia nigra pars reticulata (SNPR)- GABA \nStriatum to Globus pallidus inner segment & external segment- GABA\u200b\nGlobus pallidus external segment to subthalamic nucleus and internal segment- GABA\u200b\nSubthalamic nucleus to Globus pallidus external segment and internal segment.- Glutamate\u200b\nWithin the striatum- Cholinergic interneurons.', 'role': 'assistant'}]