circulatory and respiratory system

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Across
  1. 4. help blood clot
  2. 7. the system that provides cells with oxygen
  3. 8. small tubes that lead to the alveoli
Down
  1. 1. hair-like structures that trap dust and other
  2. 2. liquid part of blood
  3. 3. muscle that has four chambers that pumps blood
  4. 5. blood pressure where force is between beats
  5. 6. where air enters the lungs through two short tubes