cardiovascular system

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Across
  1. 5. largest artery in the body
  2. 6. Instrument to measure blood pressure
  3. 8. abnormal swishing sound
  4. 9. Thin-walled vessel that carries blood from body tissues and lungs back to the heart.
  5. 11. inner lining of the heart
  6. 13. record of the electrical activity of the heart
  7. 15. small artery
Down
  1. 1. muscular middle layer of the heart
  2. 2. valve between the left atrium and the left ventricle
  3. 3. beat of the heart as felt through the walls of the arteries
  4. 4. contraction phase of the heartbeat
  5. 7. Small vein.
  6. 10. blood vessels that branch from the aorta
  7. 12. relaxation phase of the heartbeat
  8. 14. innermost lining of blood vessels.