Equine Circulatory System

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Across
  1. 2. Carbon dioxide is a by product of what?
  2. 6. What is the main vein bringing the de-oxygenated blood back to the heart to be pumped back to the lungs
  3. 8. This has a nucleus, is irregular in shape and protects the body against diseases and fights infection
  4. 10. What takes blood at a high pressure away from the heart?
Down
  1. 1. what does the circulatory system keep stable?
  2. 3. The ____ brings oxygen into the body through the respiratory system
  3. 4. The heart consists of four what?
  4. 5. Small blood vessels that sit around the muscles, organs and skin in order to 'feed' those tissues
  5. 7. What takes blood to the heart
  6. 9. This is made up of 90% of water and 10% soluble substances