The Cardiovascular System

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Across
  1. 2. One of two upper chambers in the heart
  2. 3. Movement to and fro or around something
  3. 6. has a function to temporarily close a passage
  4. 8. Two atoms which is a colorless gas
  5. 9. Provides nourishment
Down
  1. 1. A hollow part or cavity in an organ
  2. 4. Distribute oxygen-rich blood to your body
  3. 5. Provides the body with nutrition and oxygen
  4. 6. any of the tubes forming part blood circulation
  5. 7. Pumps blood through your body