Heart and Blood

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Across
  1. 2. These form blood clots to prevent bleeding
  2. 3. Respiration without oxygen is described as
  3. 9. The part of the cell respiration happens in
  4. 10. We use energy to ______ taller
  5. 12. The part of blood that fights infection
Down
  1. 1. The organ that transports blood round the body
  2. 4. The gas yeast produce to make bread rise
  3. 5. The part of blood oxygen binds to
  4. 6. Respiration releases or transfers
  5. 7. A diet high in this can lead to heart disease
  6. 8. These are found in veins and prevent backflow
  7. 11. The ethanol produced by yeast can be used to make
  8. 13. The gas that we breathe in for respiration