accumulations of estrogen target neurons exist in the periventricular brain with relationships to ventral extensions of the forebrain ventricles , including parolfactory , amygdaloid , septal , preoptic , hypothalamic and thalamic areas , as well as the dorsal ventricular ridge , the piriform cortex , and midbrain-pontine periaqueductal structures .
C0006104
brain
C0085140
forebrain