Across
- 5. viral disease that damages the immune system
- 7. involuntary and quick response to a stimulus
- 8. fundamental unit of the nervous system
- 10. mosquito-borne viral disease
- 12. contains weakened or killed microorganism
- 14. bacterial disease that affects the lungs
- 16. viral infection that attacks the respiratory system
- 17. spread by female Anopheles mosquito
- 18. blood vessel that carries blood away from the heart
- 19. largest artery
Down
- 1. largest part of the brain
- 2. another name for high blood pressure
- 3. also called the "little brain"
- 4. lower chambers of the heart
- 5. a substance applied on wound to stop bleeding
- 6. lowest part of the brain
- 9. a highly addicive substance in cigarettes
- 11. prevents the backward flow of blood
- 13. blood vessel that carries blood towards the heart
- 15. clear-to-white fluid richer in white blood cells
- 18. part of the neuron that transmits electrical signal