CHAPTER 10 - Cardiovascular, Blood, Immune, Lymphatic

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Across
  1. 2. largest artery in the body
  2. 3. largest lymphatic organ in the body
  3. 5. transparent, colorless, tissue fluid
  4. 7. white blood cells that combat infection
  5. 11. outer lining covering the heart
  6. 12. two-layer sac surrounding the heart
Down
  1. 1. red blood cells that carry oxygen
  2. 2. blood vessels that carry blood away from the heart
  3. 4. middle, thick, muscular layer of the heart
  4. 6. the immune system protects the body against _______
  5. 8. blood vessels that carry blood back to the heart
  6. 9. muscular cone-shaped organ
  7. 10. disease of excessive increase in white blood cells
  8. 13. triggers an immune response in the body