Across
- 4. single layer of cells lining tissues to aid in physical defense
- 6. marking of antigens with opsonin to help phagocytes identify them for easier destruction
- 7. white blood cells that kill microorganisms by releasing cytotoxic chemicals
- 8. liquid part of blood that has the factors to maintain homeostasis
Down
- 1. blood vessels widen to increase blood flow and lower blood pressure
- 2. blood cell with nuclei and cytoplasmic organelles
- 3. cytokines that lure white blood cells to infection sites
- 4. white blood cells that kill parasites by delivering cytotoxic chemicals
- 5. white blood cells with one nucleus and can become macrophages and dendritic cells
- 9. collection of microorganisms that help control the body’s invaders