Cardiovascular System

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Across
  1. 6. lower tip of the heart
  2. 7. contraction phase of the heartbeat
  3. 8. valve located between the right atrium and right ventricle
  4. 13. valve valve positioned between the right ventricle and pulmonary artery
  5. 14. double layered membrane surrounding the heart
  6. 15. small vein
Down
  1. 1. relaxation phase of the heartbeat
  2. 2. one of two lower chambers of the heart
  3. 3. beat of the heart as felt through the walls of the arteries
  4. 4. inner lining of the heart
  5. 5. smallest type of blood vessel
  6. 9. partition or wall dividing a cavity
  7. 10. cava largest vein in the body
  8. 11. small artery
  9. 12. largest artery in the body