Across
- 3. Where lymph gets filtered
- 5. Mechanical barrier
- 8. The first and second lines of defense
- 10. Lymphatic capillaries are more ______ than blood capillaries
- 13. Includes tonsils, Peyer's patches, and the appendix
- 16. Anything that causes an immune response
- 18. Most abundant WBC; does phagocytosis
- 19. Triggered by NK cells
- 20. _____ proteins including interferons and complement proteins
- 23. Red bone marrow and thymus are ______ lymphoid organs
- 24. Proteins made by B cells that bind to antigens and neutralize pathogens
Down
- 1. Microorganism that can cause disease
- 2. The third line of defense
- 4. ______ immunity; overseen by B cells
- 6. Main warriors of the immune system
- 7. Like an internal chemical alarm
- 9. Inhibits pathogens from multiplying and increases metabolic rate of cells
- 11. ______ immunity; directed by T lymphocytes
- 12. Phagocytic cells that also activate T cells
- 14. Macronutrient transported through lacteals
- 15. Function of the lymphatic system is to return ____ fluids back to the blood
- 17. Part of adaptive immunity but not innate immunity
- 21. Goal of the immune system
- 22. Protein-containing fluid that moves through lymphatic vessels