The Human Defense System
Across
- 3. Acts as a physical barrier
- 4. an organism the causes disease
- 7. Organ of the specific immune system
- 9. A system that acts as a barrier to all pathogens attempting to gain entry to the human body
- 11. A protein produced by white blood cells in response to specific antigens
- 12. The ability to resist disease by antibody production
- 13. Foreign molecules on the surface of pathogens and stimulate antibody production
Down
- 1. the ability to resist infection
- 2. Some lymphocytes mature here
- 5. B cell lymphocytes mature here
- 6. white blood cells that surround and digest pathogens
- 8. attacks particular pathogen
- 10. Lines the respiratory systems and moves mucous back out of the respiratory system