Ch#11 Transport in humans

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Across
  1. 4. Carries oxygen using haemoglobin
  2. 6. Carries blood from heart to lungs
  3. 8. Blood passes through the heart twice per circuit
  4. 14. Lower chamber of the heart
  5. 15. Supplies blood to heart muscles
  6. 17. Clear fluid that drains tissue spaces and returns to blood
  7. 18. Tiny blood vessel for exchange of substances
  8. 19. Liquid part of blood transporting substances
  9. 21. Red pigment that carries oxygen
Down
  1. 1. Cells that fight infections
  2. 2. Structure preventing backflow of blood
  3. 3. Blood vessel carrying blood to the heart
  4. 5. Fragments that help in clotting
  5. 7. System that transports substances in humans
  6. 9. Main artery carrying blood from heart to body
  7. 10. Large vein returning blood to heart
  8. 11. Blood vessel carrying blood away from heart
  9. 12. Brings oxygenated blood from lungs to heart
  10. 13. Upper chamber of the heart
  11. 16. Rhythmic stretching of arteries due to heartbeat
  12. 20. Muscular organ that pumps blood