Blood Pumper

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Across
  1. 5. brings blood into the heart from upper parts of body
  2. 6. upper chamber of the heart
  3. 7. inner lining of blood vessels
  4. 8. blood flow from the heart to body tissues then back
  5. 9. contraction phase of the heartbeat
  6. 10. abnormal swishing sound
  7. 13. inner lining of the heart
  8. 14. slow heartbeat
Down
  1. 1. gas released by cells then exhaled from lungs
  2. 2. lower chamber of the heart
  3. 3. carries oxygen-poor blood to the lungs from the heart
  4. 4. thin, delicate vessels
  5. 11. valve between left atrium and left ventricle
  6. 12. beat of the heart
  7. 14. the color blood appears in veins from outside