Across
- 6. A sticky substance in the nose and airways that traps pathogens.
- 8. structures that make it difficult for pathogens to get past them and into the body
- 9. The enzyme found in tears
- 10. A protective covering that forms over a wound to help it heal.
Down
- 1. Harmful microorganisms that cause disease.
- 2. Strong digestive acid in the stomach that kills swallowed pathogens.
- 3. Part of the body that filters air using hairs and sticky mucus.
- 4. Liquid produced by the eyes that contains enzymes to kill bacteria.
- 5. substances produced by the body cells that trap or kill pathogens
- 7. Tiny hair-like structures in the airways that move mucus up to the throat.
- 10. The body’s outer layer that acts as a physical barrier to stop pathogens entering.