Circulation and Respiration

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Across
  1. 5. take oxygenated blood away from the heart
  2. 7. large artery that takes blood to the body
  3. 8. blood cells that fight infections
  4. 10. take deoxygenated blood to the heart
  5. 12. small whip-like projections that move mucus
  6. 14. a small artery
  7. 16. heart doorways that control blood flow direction
  8. 17. regulating chemicals carried by the blood
  9. 20. protein found in A, B, and AB blood
  10. 21. binds with oxygen and makes blood red
Down
  1. 1. yellowish, watery liquid found in blood
  2. 2. tube connecting your pharnyx to the bronchi
  3. 3. type of muscle found in the heart
  4. 4. chamber of the heart that pumps blood
  5. 6. blood cells that carry oxygen
  6. 7. air sacs in lungs where gas exchange occurs
  7. 9. number of heart beats per minute
  8. 11. trap dust and allergens in your nose
  9. 13. blood cells used in clotting
  10. 15. respiratory organs divided into lobes
  11. 18. molecule used by your cells for energy capillaries small vessels where gas exchange occurs
  12. 19. chamber of the heart that fills with blood