Across
- 2. when your body receives antibodies but doesn't make them
- 3. fast acting defense bodies have to a prior infection
- 7. connect sensory and motor neurons
- 9. brain and spinal cord make this system
- 12. protective covering for the outside of the body
- 14. proteins that react against specific antigens
- 15. attack pathogens or infected blood cells
Down
- 1. produce sticky mucus that traps foreign matter
- 4. short extensions off of the cell body
- 5. increase in humans average temperature
- 6. a local response invaders
- 8. make antibodies and memory
- 10. pick up information about the environment and transmits it to the brain or spinal cord
- 11. attack foreign organisms
- 13. the largest portion of the brain