Across
- 2. thin blood vessels
- 5. the ability to store information; to remember things
- 7. your body's natural painkiller that makes you happy
- 8. with a constant pattern
- 9. an essential chemical element that keeps you alive
Down
- 1. has to do with blood flow; circulation
- 3. a feeling of fear and uneasiness
- 4. your body's chemical messenger
- 6. an abnormal condition that affects the body