The Heart

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Across
  1. 3. pertaining to the artery
  2. 4. innermost lining of blood vessels
  3. 6. relaxation phase of heartbeat
  4. 8. contraction phase of heartbeat body
  5. 9. carries blood away from the heart
  6. 10. inadequate oxygen in tissues
  7. 11. one of two upper chambers of the heart
  8. 14. one of two lower chambers of the heart
  9. 15. smallest type of blood vessels
  10. 16. inner lining of the heart
Down
  1. 1. small artery
  2. 2. enlarged heart
  3. 5. cava, largest vein in the body
  4. 7. largest artery in the body
  5. 12. muscular middle layer of the heart
  6. 13. small vein