Unit 2 (6 - TRANSPORT IN ANIMALS)

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Across
  1. 7. Type of blood vessels which form networks at tissues to increase surface area.
  2. 9. Blood which has a high concentration of carbon dioxide and a low concentration of
  3. 10. Formed when oxygen binds to haemoglobin.
  4. 11. Blood vessel which carries blood from the heart to the body
  5. 12. A blood vessel which carries blood to the heart
  6. 13. Lower chamber of the heart.
Down
  1. 1. A blood vessel which carries blood away from the heart.
  2. 2. Type of white blood cell which produces antibodies.
  3. 3. Prevent the backflow of blood.
  4. 4. Red pigment found in red blood cells.
  5. 5. The specialised shape of a red blood cell which increases the surface area of the cell.
  6. 6. Upper chamber of the heart.
  7. 8. Type of white blood cell which carries out phagocytosis.