Respiration

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Across
  1. 4. The smallest blood vessels.
  2. 9. One pump of the heart.
  3. 13. A disease in which the alveoli join together and cannot carry enough air.
  4. 14. Organ system containing the heart and blood vessels.
  5. 15. A product of respiration.
Down
  1. 1. The feel of your blood being pumped.
  2. 2. Moving muscles in order to make air flow into and out of the lungs.
  3. 3. Means ‘requiring air’ – or, more properly, ‘requiring oxygen from the air’.
  4. 5. Blood vessel that carries blood away from the heart.
  5. 6. Small, round air sacs in the lungs.
  6. 7. Blood vessel that carries blood to the heart.
  7. 8. Part of the blood. A liquid that surrounds the blood cells.
  8. 10. When waste materials are removed from the body they are excreted.
  9. 11. Organ that pumps blood around the body.
  10. 12. form of respiration that does not use oxygen.