This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
Which of the following nucleus is not involved in Papez circuit? 
Select and explain. 
A. Hippocampus, B. Cingulate gyrus, C. Caudate nucleus, D. Thalamic nuclei
C: Caudate nucleus
Answer: C: Caudate nucleus 
Explanation: The prefrontal lobe forms a closed circuit connection with the thalamus called papez circuit. This circuit is responsible for resting EEG and plays an impoant role in control and genesis of emotions. Anterior nucleus of thalamus, pre-callosal pa of cingulate gyrus, hippocampus, and mammillary bodies of the hypothalamus forms the papez circuit. Ref: guyton and hall textbook of medical physiology 12 edition page number:826,827,828