Across
- 1. Chemicals that cause changes in body and brain
- 3. Point of contact between bones
- 9. STI causes genital warts
- 10. Disease of the liver
- 11. Natural feel-good chemical
- 14. Joining of egg and sperm in fallopian tube
- 15. Need for increased drug dose to feel effects
- 17. Form of sugar body uses
- 18. Body cannot digest
- 21. chemical that carries messages in brain
- 22. Heartbeat to produce positive training effect
- 23. Drugs that are used to relieve pain
- 24. Where fertilized egg grows and develops
- 25. Virus that causes blisters on skin and genitals
Down
- 2. Causes food poisoning
- 4. cannot be passed between people
- 5. Drugs that stimulate the CNS
- 6. Body's second major source of energy
- 7. Mutual, welcoming behavior between people
- 8. Damage to air sacs in lungs
- 12. Event that causes stress (positive or negative)
- 13. Behavior that is unwelcome and unwanted
- 16. Blood vessels that carry blood away from heart
- 19. Active in the presence of oxygen
- 20. condition that changes thinking
- 26. Contributes to group in a positive way