Across
- 4. skin secretions make epidermal surface acidic
- 6. a soft, blood-rich organ that filters blood and curls around the stomach
- 7. small masses of lymphoid tissue that trap and remove bacteria entering the throat
- 9. a gland that functions at peak levels during youth and sits abvoe the heart
- 12. group of plasma proteins that enhance other immune responses
- 13. proteins released by virus-infected cells that protect uninfected cells
Down
- 1. systemic response triggered by pyrogens; high body temp inhibits multiplication of bacteria
- 2. engulf and destroy pathogens
- 3. cells that promote cell lysis by direct cell attack against virus-infected or cancerous cells
- 5. provides resistance against acids, alkalis, and bacterial enzymes
- 8. propel debris-laden mucus away from lower respiratory passages
- 10. forms mechanical barrier that prevents pathogens from entering the body
- 11. resemble tonsils, but are found in the wall of the small intestine