Circulatory Crossword

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Across
  1. 2. carries blood back to the heart
  2. 3. carries blood from the heart to the rest of the body
  3. 7. helps the body fight infections
  4. 8. The phase of the heartbeat that allows the chambers to fill with blood
  5. 10. Two chambers at the bottom of the heart
Down
  1. 1. tiny blood vessels that connect the arteries to veins
  2. 4. carry oxygen from the lungs to the rest of the body
  3. 5. pumps blood through the circulatory system
  4. 6. separates the chambers of the heart
  5. 9. two chambers at the top of the heart