Cardiovascular System and Respiratory System

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Across
  1. 2. Contracts downwards to allow space for chest to expand.
  2. 6. Made from fatty foods that we eat. There are two types of it.
  3. 7. An effect of regular exercise on the CV system is Cardiac ...?
  4. 10. The amount of blood ejected from the heart per beat.
  5. 11. Smallest type of blood vessel, found in hands and toes.
  6. 13. Allows us to chew and breathe at the same time.
  7. 14. Protects the organs such as the lungs.
Down
  1. 1. Flap at the back of our throat.
  2. 3. The main artery.
  3. 4. Thin walled, spongy sacs that fill when we breathe.
  4. 5. Take blood TO the heart.
  5. 6. We exhale to get rid of this.
  6. 7. Oxygen attaches to this in a red blood cell.
  7. 8. Scientific name for the windpipe.
  8. 9. Deoxygenated blood returns to the heart through this.
  9. 12. Take blood AWAY from the heart.