1 - Spinal Cord--conducts nerve impulses to and from the brain
2 - Brain Stem--relays nerve impulses between parts of the brain and between the brain and spinal cord and regulates basic body functions
3 - Cerebellum--involved in coordinating actions of the muscles
4 - Pituitary Gland--master gland that controls activities of many other endocrine glands

5 - Hypothalamus--regulates many body functions, including sex drive, hunger and thirst, and body temperature; influences pituitary gland
6 - Thalamus--relays all sensory-nerve impulses except smell to the cerebral cortex
7 - Corpus Callosum--links both hemispheres of the Cerebrum
8 - Cerebrum--thinking portion of the brain where complex associations occur

LIMBIC SYSTEM -- concerned with the sense of smell and with certain complex emotional responses; includes the hippocampus, amygdala, thalamus, hypothalamus and portions of the basal ganglia

RETICULAR ACTIVATING SYSTEM -- triggers awareness, or acute conciousness; includes core of brain stem and portions of the thalamus and hypothalamus and extends into the cerebral hemispheres