The Circulatory System

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Across
  1. 2. Universal blood recipients
  2. 4. Period between the start of one heart beat and beginning of the next
  3. 6. Carry blood away from the heart
  4. 7. Thin outer layer
  5. 9. Pressure of blood within arteries
  6. 11. Functions to clot blood
  7. 13. The receiving chambers
  8. 14. Universal blood donor
Down
  1. 1. Carry blood to the heart
  2. 3. Smooth, thin, membrane lining
  3. 5. Indicates number of heart beats per minute
  4. 8. The heart muscle itself
  5. 10. Divides the heart
  6. 12. Controls blood flow