Breathing and respiration

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Across
  1. 3. The useful product of respiration.
  2. 5. the blood vessels which take blood to the heart.
  3. 6. dioxide A waste product of aerobic respiration
  4. 8. The organ responsible for pumping blood around the body.
  5. 10. Breathing is ____________ process.
  6. 11. blood cells Oxygen is carried around the body through this.
  7. 13. The organ fish use to get oxygen into their bodies.
  8. 15. Respiration is a _____________ process.
  9. 17. The blood vessels which take blood away from the heart.
  10. 18. acid Anaerobic respiration produces this product.
  11. 19. This gas diffuses into our blood for respiration.
Down
  1. 1. The blood vessels which are one cell thick to allow oxygen to diffuse into them.
  2. 2. The name for respiration without oxygen
  3. 4. This muscle flattens when breathing in.
  4. 7. The sack like structures found at the end of the lungs.
  5. 9. The chambers of the heart which receive blood.
  6. 12. These muscles between the rib cage contract whilst breathing out.
  7. 13. The sugar required for respiration.
  8. 14. The chambers which pump blood out of the heart.
  9. 16. The organ responsible for getting air into our body.