| A | B |
|---|
| synapse | gap that occurs between individual nerve cells |
| central nervous system | the brain and spinal cord |
| neurons | long, thin cells of nerve tissue which messages are sent |
| neurotransmitter | chemicals released by neurons |
| peripheral nervous system | nerves branching out from the spinal cord |
| forebrain | part of the brain that covers the brain's central core/thinking processes |
| hindbrain | rear base of skull/basic processes of life |
| midbrain | integrates sensory info. & relays it upward |
| parasympathetic system | calms body after emergencies |
| sypathetic system | prepares body for action |
| autonomic system | involuntary muscles & internal organs |
| somatic system | voluntary muscles & sense organs |
