Equine circulatory system

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Across
  1. 2. nerve branches that speed up heart rate
  2. 4. relaxation
  3. 7. largest artery in the body
  4. 10. contraction
  5. 11. weight of the heart in comparison to the horses overall weight
Down
  1. 1. small fragments of cells
  2. 3. pump blood away from the heart
  3. 5. nerve branches that slow heart rate
  4. 6. how veins stop blood flowing down
  5. 8. how many chambers in the heart
  6. 9. type of circulatory system where blood gets passed through body twice