Circulatory System

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Across
  1. 3. Waste that is made during respiration
  2. 5. The blood vessels that gas exchange occurs in
  3. 7. The blood vessels that bring blood back to the heart
  4. 8. Blood _________ keep blood going in the right direction
  5. 10. What we need oxygen and glucose for (process of making energy!)
  6. 11. The chamber of the heart that receives blood
  7. 13. The blood vessels that have the thickest walls
  8. 15. The part of the blood that helps clot blood
Down
  1. 1. ________ blood cells help fight disease and protect us from germs
  2. 2. What does the blood take on board when it's at the lungs
  3. 4. The tiny air sacs in the lungs where gas exchange happens
  4. 6. The yellow liquid that carries all the blood cells and platelets
  5. 8. The chamber of the heart that pumps blood
  6. 9. The side of the heart that is stronger to pump blood all over the body
  7. 12. ________ blood cells transport oxygen
  8. 14. The side of the heart that deoxygenated blood goes to