Another way to talk about the brain is in terms of development. ONTONGENY RECAPITULATES PHYLOGENY HINDBRAIN MIDBRAIN FOREBRAIN
HINDBRAIN—oldest part; buried deep in brain tissue; processes vital functions; consists of the medulla, the pons and the cerebellum MIDBRAIN—next oldest; processes visual and auditory information; consists of the thalamus and other smaller structures
FOREBRAIN—newest part; cortex and limbic system structures; processes thinking, feelings and motor activity; consists of the four lobes, hypothalamus, amygdala, hippocampus and others
THERE ARE 100 TRILLION NEURONS IN THE BRAIN WHAT IS A TRILLION?