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Unformatted text preview: The Brain Lower-level Brain Structures *Brainstem *the oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull *responsible for automatic survival functions *Reticular Formation *a nerve network in the brainstem that plays an important role in controlling arousal *Filters incoming stimuli from the spinal cord and send the important info on to other areas of the brain *Medulla [muh-DUL-uh] *base of the brainstem *controls heartbeat and breathing More Lower-level Brain Structures *Thalamus [THAL-uh-muss] *the brains sensory switchboard, located on top of the brainstem *it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla More Lower-level Brain Structures *Cerebellum [sehr-uh-BELL-um] *the little brain attached to the rear of the brainstem *it helps coordinate voluntary movement and balance The Limbic System *a doughnut-shaped system of neural structures at the border of the brainstem and cerebral hemispheres *associated with emotions such as fear and aggression and drives such as those for food and sex *includes the hippocampus, amygdala, and hypothalamus. The Limbic System Parts of the Limbic System *Amygdala [ah-MIG-dah-la] *two almond-shaped neural clusters that are components of the limbic system and are linked to emotion *Influences aggression and fear *Hypothalamus *neural structure lying below ( hypo ) the thalamus; directs several maintenance activities *eating *drinking...
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- Fall '10