1. The limbic lobe and the related subcortical nuclei.
The limbic lobe includes the cingulate gyrus, isthmus, hippocampal gyrus, and uncus.
2. The related subcortical nuclei are the hypothalamus, amygdala, septal nuclei, portion of the basal ganglion,paraolfactory area, and anteriorthalamic nucleus.
The hypothalamus is located in the middle of all these structures and plays a vital role in the limbic system.