Lymphatic System + Immunity

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Across
  1. 6. A type of immunity that is acquired through exposure to pathogens.
  2. 8. The chemical signal released by damaged cells that increases blood flow and causes inflammation.
  3. 11. A fluid that leaks out of blood capillaries and accumulates in body tissues.
  4. 12. The main fluid transported by lymphatic vessels.
Down
  1. 1. The major vein where lymph is returned to the bloodstream.
  2. 2. Small structures that filter harmful substances from lymph.
  3. 3. The body's first line of defense against pathogens, including skin and mucus membranes.
  4. 4. Slows or inhibits pathogen reproduction
  5. 5. The process of engulfing and digesting harmful pathogens.
  6. 7. Surface molecule on pathogen
  7. 9. The accumulation of fluid in tissues, leading to swelling.
  8. 10. The primary function of the lymphatic system is to drain excess ____ from body tissues.