10.7

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Across
  1. 2. beat of the heart as felt through the walls of the arteries
  2. 5. vessel that carries blood away from the heart
  3. 8. a small artery
  4. 9. valve located between the right atrium and the right ventricle
  5. 12. largest vein in the body
  6. 13. upper chambers of the heart
Down
  1. 1. innermost lining of blood vessels
  2. 3. inner lining of the heart
  3. 4. lower chambers of the heart
  4. 6. middle layer of the heart
  5. 7. small vein
  6. 8. The largest artery in the body
  7. 10. relaxation phase of the heartbeat
  8. 11. smallest type of blood vessel
  9. 12. vessel that carries blood back to the heart