brain evolution from reptilian brain, to limbic system and neocortex

amygdala amygdalae anatomical anatomy basal behaviours biology brain callosum cerebellum cerebrum cingulate cognition complex corpus cortex cross diagram education evolution feeling fornix ganglia gland head health hippocampus human hypothalamus illustration limbic lobe mammalian medical memories neocortex nervous part pituitary reptilian science section system thalamus vector